43197

🔭 43197 — Esophagoscopy, Rigid or Flexible Transnasal; Diagnostic, Including Collection of Specimen(s) by Brushing or Washing, When Performed

Quick Reference

Global Period: 000 days | wRVU: 1.26 | Assistant Payable: ❌ No | Co-Surgeon: ❌ No | Category: Surgery – Digestive System / Esophagus | Setting: Office / ASC / Outpatient | Access Route: Transnasal (nose → nasopharynx → esophagus)

---

📋 Official CPT Description

CPT 43197 — Esophagoscopy, rigid or flexible transnasal; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)

This code describes a transnasal esophagoscopy (TNE) — a minimally invasive endoscopic examination of the esophagus performed by passing a small-caliber flexible (or rigid) endoscope through the nasal cavity → nasopharynx → hypopharynx → esophagus → gastroesophageal junction (GEJ), rather than through the mouth (transoral route). 43197 captures the diagnostic examination only — including specimen collection by brushing or washing if performed — without biopsy. When tissue biopsy is obtained, the appropriate code is 43198.

The parenthetical designation (separate procedure) indicates that 43197 is not routinely billed when performed as an integral part of a more comprehensive service (e.g., when transnasal esophagoscopy is performed as a component of a broader upper GI endoscopic examination). When performed as a stand-alone diagnostic examination, it is separately reportable.

---

🧠 Detailed Clinical Description

What Is Transnasal Esophagoscopy (TNE)?

Transnasal esophagoscopy (TNE) is an endoscopic technique that accesses the esophagus through the nasal passage rather than the traditional oral/transoral route used for standard upper gastrointestinal endoscopy (EGD). The distinguishing features of TNE compared to standard transoral esophagoscopy include:

Feature	Transnasal Esophagoscopy (43197)	Standard Transoral EGD (43235)
Access route	Nasal cavity → nasopharynx → hypopharynx → esophagus	Mouth → oropharynx → esophagus
Scope diameter	Ultra-thin (≤5.9 mm; typically 3.2–5.4 mm)	Standard (9–11 mm)
Sedation required	Usually none or topical anesthetic only	IV moderate sedation (typically)
Gag reflex suppression	Minimal — nasal route bypasses gag reflex trigger zone	Significant gag reflex concern
Setting	Office-based (most commonly) or ASC	ASC, endoscopy suite, hospital
Patient positioning	Upright or semi-reclined (chair or exam table)	Left lateral decubitus
Vocal cord visualization	✅ Yes — scope passes through larynx/hypopharynx	❌ Limited
Laryngeal/pharyngeal assessment	✅ Included in scope trajectory	❌ Not routinely assessed
Gastric body visualization	Limited (TNE typically limited to esophagus only)	✅ Full stomach and duodenum
Recovery time	Minimal (no sedation)	30–60 min (sedation recovery)
Cost to patient/payer	Lower (no anesthesia, no recovery room)	Higher (anesthesia + facility)
Driver restriction post-procedure	Not required (no sedation)	Required (sedation)

Scope Technology for 43197

TNE utilizes ultra-thin flexible esophagoscopes designed specifically for nasal passage navigation:

Scope Type	Outer Diameter	Working Channel	Notes
Flexible ultra-thin (e.g., Olympus ENF-VH, Pentax EE-3490TK)	3.2–5.9 mm	2.0 mm	Most commonly used; allows brushing/washing
Rigid transnasal (Hopkins rod-lens telescope)	4.0 mm	Limited	Less common; ENT-specific; primarily laryngopharyngeal assessment
Distal chip ultra-thin (chip-on-tip CCD)	5.1–5.9 mm	2.0–2.4 mm	Superior image quality; biopsy-capable (→ 43198)

Anatomical Trajectory of TNE

During 43197, the endoscopist navigates the scope through the following anatomical stations:

Station	Landmark	Clinical Assessment
Nasal cavity	Inferior meatus / middle meatus	Nasal mucosa, turbinates, septal deviation
Nasopharynx	Choana, torus tubarius, adenoid pad	Nasopharyngeal mucosa, adenoid hypertrophy
Hypopharynx	Piriform sinuses, postcricoid region	Postcricoid edema, pooling, mucosal lesions
Larynx	Epiglottis, arytenoids, true vocal cords, subglottis	Vocal cord mobility, lesions, erythema, edema — unique to TNE
Upper esophageal sphincter (UES)	Cricopharyngeus muscle	UES tone, cricopharyngeal hypertrophy, Zenker’s diverticulum
Cervical esophagus	C5–T1 level	Mucosal pattern, pulsion diverticula, external compression
Mid-esophagus	T1–T8 level	Mucosal pattern, vascular impressions (aorta, left mainstem bronchus)
Distal esophagus	T8–T10 level	Reflux esophagitis changes, stricture, rings, Barrett’s changes
Gastroesophageal junction (GEJ)	Z-line / squamocolumnar junction	Z-line position, hiatal hernia, GEJ integrity

Laryngeal Visualization — A Unique Advantage of TNE

One of the most clinically significant advantages of TNE over standard transoral EGD is the ability to directly visualize the larynx as the scope traverses the hypopharynx and larynx during insertion. This makes TNE particularly valuable in otolaryngology practice, where assessment of:

• Vocal cord lesions, paralysis, or paresis
• Posterior laryngeal edema/erythema (LPR)
• Subglottic stenosis
• Arytenoid erythema or edema
• Interarytenoid changes suggestive of reflux

…can be obtained simultaneously with esophageal examination in a single office-based procedure without additional instrumentation or sedation.

”Rigid or Flexible” — Scope Type Variation

43197 encompasses both rigid and flexible transnasal esophagoscopy:

• Flexible TNE is overwhelmingly dominant in contemporary practice — office-based, well-tolerated, excellent distal esophageal visualization
• Rigid transnasal esophagoscopy (using Hopkins rod-lens telescopes) is primarily used in ENT surgical suites for laryngopharyngeal procedures or in the operating room; rarely used for pure esophageal examination

Both approaches are captured by the same code 43197 — the physician selects the appropriate scope based on clinical indication and patient anatomy.

Specimen Collection by Brushing or Washing — Included in 43197

43197 explicitly includes collection of specimen(s) by brushing or washing when performed — these techniques are bundled into the base code and not separately reportable:

Technique	Description	Clinical Use
Brushing	Cytology brush passed through working channel; abrades mucosal surface; cells collected for cytopathologic analysis	Surveillance for Barrett’s esophagus; suspected esophageal malignancy; candidal esophagitis; viral esophagitis cytology
Washing/lavage	Saline instilled through working channel; aspirated back; fluid sent for cytology or culture	Fungal infection, Helicobacter pylori, viral cultures; mucosal cytology when brush unavailable

Brushing/Washing Does NOT Become 43198

When specimen collection is performed only by brushing or washing (no forceps biopsy), the correct code remains 43197. The distinction between 43197 and 43198 is:

• 43197 = diagnostic esophagoscopy ± brushing/washing (no tissue biopsy)
• 43198 = same procedure WITH forceps tissue biopsy (single or multiple specimens)

If brushing/washing is performed AND a forceps biopsy is taken, code 43198 only — the brushing/washing is bundled into 43198.

Clinical Indications for 43197

43197 is indicated across a broad range of otolaryngologic and gastroenterologic conditions:

Clinical Indication	Description
Gastroesophageal reflux disease (GERD)	Evaluation of esophageal mucosal changes; assessment of esophagitis grade; ruling out Barrett’s esophagus; monitoring treatment response
Laryngopharyngeal reflux (LPR)	Office-based simultaneous laryngeal and esophageal assessment; correlation of posterior laryngeal findings with distal esophageal pathology
Dysphagia evaluation	Assessment of esophageal lumen, mucosal pattern, rings, webs, strictures, extrinsic compression
Barrett’s esophagus screening/surveillance	In selected patients — office-based alternative to sedated EGD; visualization of Z-line; brushing for cytology
Globus pharyngeus	Exclusion of structural esophageal pathology in patients with persistent throat lump sensation
Esophageal stricture evaluation	Identification and grading of peptic strictures, Schatzki rings, or post-radiation stenosis
Hoarseness / vocal cord evaluation	Combined laryngeal and esophageal assessment in patients with voice complaints and suspected reflux
Post-treatment surveillance	Following head and neck cancer treatment (surgery/radiation) — surveillance for esophageal complications, stricture, or recurrence
Esophageal foreign body assessment	Inspection of the esophageal lumen for retained foreign material or mucosal trauma (diagnostic only — therapeutic removal → different code)
Zenker’s diverticulum evaluation	Assessment of diverticulum size, contents, and cricopharyngeus — complements manometry findings
Caustic ingestion follow-up	Surveillance of esophageal healing after caustic injury
Candidal/viral esophagitis	Assessment and brushing for cytology/culture in immunocompromised patients
Preoperative assessment	Evaluation of esophageal anatomy before head and neck surgery, thyroid surgery, or esophageal procedures
Voice disorders	Combined laryngoscopy and esophagoscopy in patients with suspected reflux-related voice disorder

Sedation Considerations

A defining feature of 43197 is that it is typically performed without IV sedation:

Anesthesia Type	Typical Use with 43197
No anesthesia	Some tolerant patients; very brief examinations
Topical nasal anesthetic	Most common — oxymetazoline (decongestant) + lidocaine spray to nasal mucosa and posterior pharynx
Topical pharyngeal anesthetic	Benzocaine or lidocaine spray to posterior oropharynx/hypopharynx
Topical esophageal lidocaine	Instilled through working channel for distal esophageal sensitivity
IV conscious sedation	Occasionally used in highly anxious patients or those with severe nasal obstruction; not typical
General anesthesia	Rare — only in special circumstances (pediatric, severe trismus, OR-based TNE)

No Sedation = Lower Global Risk, Higher Patient Acceptance

The absence of IV sedation is both a clinical advantage (immediate return to activities, driving, work) and a cost advantage (eliminates anesthesia provider fees, recovery room charges, and pre-procedure nursing monitoring). This makes TNE increasingly preferred in office-based ENT practice for appropriate indications.

Surgical Steps Included in 43197

1. Preoperative preparation — Patient in upright or semi-reclined position; informed consent; review of indications and contraindications
2. Nasal preparation — Topical oxymetazoline spray to bilateral nasal passages for vasoconstriction and decongestion; wait 2–5 minutes; assess nasal patency and select more patent side
3. Topical anesthesia — Lidocaine spray (4% or 2%) applied to nasal mucosa, nasopharynx, and posterior oropharynx; benzocaine spray to posterior pharynx if needed
4. Scope preparation — Transnasal scope lubricated with water-soluble gel; light source and video processor connected; white balance and focus confirmed
5. Nasal insertion — Scope introduced along the floor of the nasal cavity (inferior meatus) or middle meatus; passed gently through nasopharynx
6. Hypopharyngeal/laryngeal assessment — As scope traverses hypopharynx: piriform sinuses visualized; scope deflected to assess laryngeal inlet — epiglottis, arytenoids, vocal cords, posterior commissure, subglottis documented
7. UES negotiation — Scope passed through the upper esophageal sphincter (cricopharyngeus); patient instructed to swallow to facilitate passage
8. Systematic esophageal examination — Scope advanced through cervical, mid, and distal esophagus; mucosal pattern assessed at each level; luminal diameter, vascular pattern, and color documented
9. GEJ assessment — Z-line position documented; hiatal hernia identified if present; retroflexion not possible with TNE scope (limits gastric visualization)
10. Specimen collection (if indicated) — Cytology brush passed through working channel; mucosal surface abraded; brush withdrawn and specimen submitted; or saline washing instilled and aspirated for cytology/culture
11. Scope withdrawal — Systematic withdrawal with mucosal assessment; repeat hypopharyngeal and laryngeal documentation on withdrawal
12. Post-procedure assessment — Patient observed briefly for any adverse reaction; instructions provided (eating restrictions if topical anesthesia used — typically 30–60 minutes)
13. Documentation — Procedure report with labeled endoscopic images/video; anatomical landmarks; mucosal findings; specimen details

---

💰 Reimbursement & RVU Profile

Component	Value
Work RVU (wRVU)	1.26 CMS MPFS 2025
Global Period	000 days
Assistant Surgeon Payable	❌ No (Indicator: 0)
Co-Surgeon Payable	❌ No
Team Surgery	❌ No
Facility RVU	✅ Yes
Non-Facility RVU	✅ Yes (office-based — higher total RVU in non-facility setting)
Multiple Procedure Indicator	2 (standard reduction applies)
Bilateral Surgery Indicator	0

Facility vs. Non-Facility RVU — Critical Distinction for 43197

Unlike most surgical codes that are facility-only, 43197 has both facility AND non-facility RVU values — reflecting that TNE is commonly performed in the office setting (POS 11). In non-facility settings (office), the total RVU is higher because it includes practice expense for equipment, supplies, and staff that the physician absorbs directly. When performed in a facility (hospital outpatient or ASC), the facility absorbs these costs and the physician receives a lower RVU.

Setting	POS Code	Total RVU (approx.)
Office (non-facility)	11	~3.52 (higher — includes PE RVU)
Facility (ASC/Hospital)	22, 24	~1.90 (lower — facility absorbs PE)

Billing 43197 from an office-based practice with appropriate documentation of office setting is the highest-reimbursement pathway for this code.

wRVU Comparison — Esophagoscopy Family

Code	wRVU	Procedure
43197	1.26	Transnasal esophagoscopy, diagnostic (this code)
43198	~2.00	Transnasal esophagoscopy with biopsy
43200	~2.60	Esophagoscopy, flexible transoral; diagnostic
43202	~3.17	Esophagoscopy, flexible transoral; with biopsy
43235	~3.50	Upper GI endoscopy (EGD); diagnostic
43239	~4.43	EGD with biopsy
31575	~1.09	Laryngoscopy, flexible; diagnostic

43197 carries modest wRVU, reflecting the relatively brief procedure time and low anesthetic requirements. The clinical value — early detection of esophageal pathology, avoidance of sedation, office-based efficiency — far exceeds the numerical wRVU in practice economics when high procedure volume is achievable.

---

✅ Included Services (Bundled into 43197)

The following are not separately reportable when performed as integral components of 43197:

• Passage of transnasal scope through nasal cavity, nasopharynx, hypopharynx, and larynx en route to the esophagus
• Visual inspection of all esophageal segments (cervical, mid, distal) and gastroesophageal junction
• Laryngeal and hypopharyngeal visualization incidental to scope passage
• Topical nasal and pharyngeal anesthesia administration
• Nasal decongestant spray (oxymetazoline) application
• Routine photography and video documentation of findings
• Specimen collection by brushing when performed
• Specimen collection by washing/lavage when performed
• Routine fluoroscopy guidance for scope passage (if used, typically not required)
• Standard scope lubrication and preparation
• Patient monitoring during the procedure (in office setting)
• Routine post-procedure patient instructions and observation
• Standard procedure report dictation/documentation

---

❌ Excludes / Separately Reportable Services

The following may be billed separately when clearly documented as distinct services:

Separate Service	Code
Transnasal esophagoscopy with biopsy (forceps tissue sampling)	43198
Flexible transoral esophagoscopy, diagnostic	43200
Flexible transoral esophagoscopy with biopsy	43202
Flexible nasopharyngoscopy (nasal/pharyngeal examination only — not esophageal)	92511
Flexible laryngoscopy, diagnostic	31575
Flexible laryngoscopy with biopsy	31576
Flexible laryngoscopy with stroboscopy	31579
Fiberoptic endoscopic evaluation of swallowing (FEES)	92612, 92613
Upper GI endoscopy (EGD) — transoral; diagnostic	43235
EGD with biopsy	43239
EGD with dilation	43249
Esophageal manometry	91010, 91013
Ambulatory pH monitoring	91034–91038
Esophageal dilation (when performed separately)	43450, 43453
Esophageal foreign body removal (when therapeutic intervention performed)	43215
Esophageal polypectomy	43217
Injection of esophageal varices	43204
Esophageal band ligation	43205
Esophageal ablation (e.g., Barrett’s — radiofrequency)	43228
Esophageal stent placement	43212
Esophageal ultrasound (EUS)	43231, 43232
Moderate/deep sedation (if provided by separate provider)	99152, 99153
Pathology evaluation of brushing specimens	Pathology codes (billed separately by pathologist)
Radiologic supervision and interpretation (if fluoroscopy separately used)	74360

43197 vs. 31575 — Laryngoscopy Bundling Issue

A frequent billing question in ENT practice: when TNE (43197) is performed and the scope passes through the larynx, can 31575 (flexible laryngoscopy) also be billed?

Per CMS NCCI edits, 31575 is bundled with 43197 — the laryngeal visualization that occurs during TNE scope passage is considered integral to the esophagoscopy approach and is not separately reportable. To separately bill 31575, the laryngoscopy must be performed as a genuinely distinct procedure at a different point in the encounter with independent clinical documentation and purpose (e.g., a complete diagnostic laryngoscopy performed separately from the esophagoscopy, not merely the en-passant laryngeal view during TNE scope traversal).

Document the indication and findings of each examination independently if billing both — and verify current NCCI edits and modifier -59 applicability with your payer.

43197 vs. 92612 — FEES Distinction

Fiberoptic Endoscopic Evaluation of Swallowing (FEES) (92612, 92613) is a distinct procedure from TNE (43197):

• 92612/92613 = FEES — scope passes through nose to visualize the pharynx and larynx during swallowing of food/liquid boluses; primary purpose is swallowing function assessment
• 43197 = TNE — scope passes through nose into the esophagus; primary purpose is esophageal mucosal examination

When both a complete FEES and a complete TNE are performed in the same session (uncommon but possible in comprehensive dysphagia/reflux evaluation), both may be separately reportable with modifier -59 and distinct documentation of each procedure’s independent indications and findings. Verify NCCI edits before billing both.

43197 and 43235 — Same Session Bundling

When 43197 (transnasal esophagoscopy) and 43235 (transoral upper GI endoscopy) are performed in the same session, NCCI bundling applies — 43197 is generally considered a component of the more comprehensive upper GI endoscopy. In clinical practice, these are rarely performed simultaneously; if they are, document the independent indication for each and apply modifier -59 with careful NCCI edit review.

---

🔬 Transnasal Esophagoscopy Code Family Comparison

43197 vs. 43198 — The Key Distinction

Feature	43197	43198
Esophagoscopy performed	✅ Yes — transnasal	✅ Yes — transnasal
Diagnostic visualization	✅ Yes	✅ Yes
Brushing/washing	✅ Included when performed	✅ Included when performed
Forceps biopsy	❌ No	✅ Yes — single or multiple
wRVU	1.26	~2.00
Tissue pathology generated	Cytology (brushing) only	Histopathology (biopsy)
Clinical use	Surveillance, initial evaluation, GERD/LPR assessment	Abnormal mucosa, Barrett’s confirmation, mass sampling

When to Upgrade from 43197 to 43198

The decision to perform biopsy (upgrading to 43198) is made intraoperatively based on visualization findings. Common triggers for biopsy (→ 43198):

• Salmon-colored columnar mucosa at GEJ (suspected Barrett’s esophagus)
• Mass or nodular lesion in esophageal lumen
• Erosive or ulcerative esophagitis not responding to PPI therapy
• Whitish plaques (suspected Candida esophagitis — biopsy for confirmation)
• Submucosal lesion (EUS may be preferred but biopsy may be attempted)
• Stricture with mucosal irregularity (malignancy concern)

When planning for 43197 but obtaining biopsy intraoperatively due to unexpected findings, bill 43198 — not 43197 — as 43198 fully describes the more comprehensive service actually performed.

Full Esophagoscopy Code Family — Rigid and Flexible Transoral

Understanding the Full Esophagoscopy Code Landscape

43197 and 43198 represent the transnasal esophagoscopy codes introduced to the CPT code set. The broader esophagoscopy code family includes:

Code Range	Access Route	Scope Type	Key Features
43197–43198	Transnasal	Flexible or rigid ultra-thin	Office-based; no/minimal sedation; laryngeal visualization
43191–43196	Transoral	Rigid	OR-based; general/deep sedation; therapeutic capabilities
43200–43228	Transoral	Flexible	ASC/hospital; sedation; full therapeutic capability
43235–43259	Transoral	Flexible	Upper GI (esophagus + stomach + duodenum)

---

🏷️ Applicable Modifiers

Modifier	Description	When to Use
-51	Multiple procedures	When 43197 is performed alongside another distinct endoscopic or surgical procedure in the same session — e.g., laryngoscopy with biopsy, separate from TNE; append to lesser-valued code
-59	Distinct procedural service	To unbundle a separately identifiable service — e.g., when laryngoscopy (31575) is performed as a genuinely distinct procedure with independent documentation, separate from the TNE scope passage; verify NCCI
-22	Increased procedural complexity	Severely deviated nasal septum requiring modified approach; marked nasal stenosis requiring special instrumentation; significantly increased procedure time; must be documented specifically
-52	Reduced services	Procedure initiated but terminated early before complete esophageal examination due to patient intolerance, nasal obstruction, or UES spasm — scope did not reach distal esophagus/GEJ
-53	Discontinued procedure	Procedure terminated after initiation due to threat to patient well-being (vasovagal response, severe epistaxis, laryngospasm)
-73	Discontinued outpatient procedure prior to administration of anesthesia	ASC setting — procedure discontinued before any anesthesia given
-74	Discontinued outpatient procedure after administration of anesthesia	ASC setting — procedure discontinued after anesthesia initiated
-76	Repeat procedure by same physician	Same 43197 procedure repeated by the same physician on the same day (e.g., initial TNE non-diagnostic; repeat attempt after better nasal preparation)
-77	Repeat procedure by different physician	Same 43197 procedure performed by a different physician on the same day
-78	Return to OR for related procedure during global period	Re-examination required during the 0-day global — not typically applicable for this code given 0-day global; may apply if performed in a procedure suite with associated surgical package
-79	Unrelated procedure during postoperative period	Unrelated procedure within global period of a concurrent surgical service
-GC	Teaching physician service	Resident performed the procedure under teaching physician supervision
-GR	Rural health clinic	Service performed at a rural health clinic

Modifier -52 — Common Scenario for 43197

Modifier -52 (reduced services) is the most clinically relevant modifier for TNE. The most common scenario requiring -52 is when:

• The scope successfully enters the nasal cavity and nasopharynx but cannot be advanced past the upper esophageal sphincter (UES) due to spasm, patient intolerance, or cricopharyngeal dysfunction
• The esophagoscopy is technically initiated (scope in nose/nasopharynx) but the distal esophagus and GEJ are not visualized

In this scenario, 43197 with modifier 52 is appropriate — indicating the intended procedure was performed to a lesser extent than its full description. Document the extent of visualization achieved and the reason for early termination.

---

🩺 ICD-10-CM Diagnoses Commonly Paired with 43197

Gastroesophageal Reflux Disease (GERD)

ICD-10-CM	Description	HCC?
K21.0	Gastro-esophageal reflux disease with esophagitis	❌
K21.00	GERD with esophagitis, without bleeding	❌
K21.01	GERD with esophagitis, with bleeding	❌
K21.9	Gastro-esophageal reflux disease without esophagitis	❌

K21.0 vs. K21.9 — Documentation Drives Code Selection

• Use K21.0 when the provider documents or confirms esophagitis on endoscopy (erosions, erythema, friable mucosa, ulceration graded by Los Angeles Classification A–D)
• Use K21.9 when GERD is documented without esophagitis — including non-erosive reflux disease (NERD) and symptomatic GERD with normal esophageal mucosa
• Post-procedure, update the diagnosis code based on findings documented during 43197 — the pre-procedure working diagnosis may change based on endoscopic visualization

Laryngopharyngeal Reflux (LPR)

ICD-10-CM	Description	HCC?
J68.0	Chemical pneumonitis due to inhalation of food and vomit (rarely applicable)	❌
K21.9	GERD without esophagitis (LPR often coded here when esophageal manifestation is primary)	❌
R05.9	Cough, unspecified (chronic cough from LPR)	❌
J37.0	Chronic laryngitis	❌
R49.0	Dysphonia (voice changes from LPR)	❌
R09.89	Other specified symptoms and signs involving the circulatory and respiratory systems (globus, throat clearing)	❌

LPR — The Primary ENT Indication for 43197

Laryngopharyngeal reflux (LPR) is the most common otolaryngology-specific indication for 43197. LPR occurs when gastric acid and pepsin reflux superiorly into the laryngopharynx, causing:

• Posterior laryngeal erythema and edema
• Arytenoid erythema and granuloma formation
• Interarytenoid pachydermia (cobblestoning)
• Subglottic edema
• Voice changes, throat clearing, globus sensation, chronic cough

ICD-10-CM does not have a dedicated LPR code. LPR is most commonly coded as K21.9 (GERD without esophagitis) or under the predominant symptom (e.g., R49.0 for dysphonia). The TNE allows simultaneous laryngeal (direct visualization) and esophageal assessment — a single office visit captures the full diagnostic picture. When laryngeal findings are documented, also code the laryngeal diagnosis.

Barrett’s Esophagus

ICD-10-CM	Description	HCC?
K22.70	Barrett’s esophagus without dysplasia	❌
K22.710	Barrett’s esophagus with low-grade dysplasia	❌
K22.711	Barrett’s esophagus with high-grade dysplasia	❌
K22.719	Barrett’s esophagus with dysplasia, unspecified	❌

Barrett's Esophagus — Surveillance with 43197

TNE (43197) is gaining traction as an alternative surveillance modality for Barrett’s esophagus — particularly for patients with low-risk disease (non-dysplastic Barrett’s, short-segment) who are candidates for reduced-intensity surveillance. When used for Barrett’s surveillance without biopsy (brushing cytology only), 43197 is appropriate. When surveillance includes confirmatory biopsy → upgrade to 43198. Code Barrett’s specifically based on pathology results from prior biopsy — the endoscopic appearance alone is insufficient to code K22.70 if not histologically confirmed.

Esophageal Motility and Structural Disorders

ICD-10-CM	Description	HCC?
K22.0	Achalasia of cardia	❌
K22.1	Ulcer of esophagus	❌
K22.2	Esophageal obstruction	❌
K22.3	Perforation of esophagus	❌
K22.4	Dyskinesia of esophagus (diffuse esophageal spasm)	❌
K22.5	Diverticulum of esophagus, acquired (Zenker’s; traction; epiphrenic)	❌
K22.6	Gastro-esophageal laceration-hemorrhage syndrome (Mallory-Weiss)	❌
K22.89	Other specified disease of esophagus	❌
K22.9	Disease of esophagus, unspecified	❌
K23	Disorders of esophagus in diseases classified elsewhere	❌

Dysphagia

ICD-10-CM	Description	HCC?
R13.10	Dysphagia, unspecified	❌
R13.11	Dysphagia, oral phase	❌
R13.12	Dysphagia, oropharyngeal phase	❌
R13.13	Dysphagia, pharyngeal phase	❌
R13.14	Dysphagia, pharyngoesophageal phase	❌
R13.19	Other dysphagia	❌

Dysphagia Coding Specificity

ICD-10-CM differentiates dysphagia by the phase of the swallow affected. When 43197 is performed to evaluate dysphagia:

• If the phase is documented by the clinician (oral, pharyngeal, esophageal) → use the specific subcode
• If the phase is not specified → use R13.10 (unspecified)
• After the procedure, update the diagnosis to reflect any structural finding identified (e.g., Schatzki ring → K22.2, esophageal stricture → K22.2, esophageal diverticulum → K22.5) — the symptom code R13.10 should be replaced by or supplemented with the etiology code when identified

Esophageal Malignancy

ICD-10-CM	Description	HCC?
C15.3	Malignant neoplasm of upper third of esophagus	✅ HCC 11
C15.4	Malignant neoplasm of middle third of esophagus	✅ HCC 11
C15.5	Malignant neoplasm of lower third of esophagus	✅ HCC 11
C15.8	Malignant neoplasm of overlapping sites of esophagus	✅ HCC 11
C15.9	Malignant neoplasm of esophagus, unspecified	✅ HCC 11
Z85.01	Personal history of malignant neoplasm of esophagus	❌

Esophageal Cancer — HCC Capture

All esophageal malignancy codes (C15.3–C15.9) carry HCC 11 weight — a significant risk-adjustment driver in Medicare Advantage and value-based care. When 43197 is performed for post-treatment surveillance or evaluation in a patient with known or suspected esophageal malignancy, capture the active malignancy code. Use Z85.01 only for patients with no current evidence of disease after treatment is complete.

Laryngeal / Vocal Cord Diagnoses (Simultaneously Assessed During TNE)

ICD-10-CM	Description	HCC?
J38.00	Paralysis of vocal cords and larynx, unspecified	❌
J38.01	Paralysis of vocal cords and larynx, unilateral	❌
J38.02	Paralysis of vocal cords and larynx, bilateral	❌
J38.1	Polyp of vocal cord and larynx	❌
J38.2	Nodules of vocal cords	❌
J38.3	Other diseases of vocal cords	❌
J38.4	Edema of larynx	❌
J38.5	Laryngeal spasm	❌
J37.0	Chronic laryngitis	❌
R49.0	Dysphonia	❌
R49.1	Aphonia	❌

Laryngeal Diagnoses Discovered During 43197

Because TNE provides direct laryngeal visualization during scope passage, findings such as vocal cord paralysis, posterior glottic edema (LPR), polyps, or nodules may be identified incidentally or as co-primary targets of the examination. Code all confirmed findings as additional diagnoses — do not limit coding to the esophageal finding alone. These additional laryngeal diagnoses support the clinical necessity of the combined laryngeal/esophageal assessment inherent in TNE and provide a more complete clinical picture in the record.

Nasal/Pharyngeal Diagnoses (Encountered During TNE Approach)

ICD-10-CM	Description	HCC?
J34.2	Deviated nasal septum	❌
J34.3	Hypertrophy of nasal turbinates	❌
J35.1	Hypertrophy of tonsils	❌
J35.3	Hypertrophy of tonsils with hypertrophy of adenoids	❌
J39.2	Other diseases of pharynx	❌
R09.89	Other specified symptoms and signs (globus pharyngeus)	❌

Post-Procedural and Surveillance Diagnoses

ICD-10-CM	Description	HCC?
Z09	Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm	❌
Z12.11	Encounter for screening for malignant neoplasm of colon (not esophagus — example)	❌
Z12.89	Encounter for screening for malignant neoplasms of other sites (esophagus)	❌
Z85.01	Personal history of malignant neoplasm of esophagus	❌
Z87.19	Personal history of other diseases of digestive system	❌
Z96.89	Presence of other specified functional implants	❌

Infectious Esophagitis

ICD-10-CM	Description	HCC?
B37.81	Candidal esophagitis	❌
B00.84	Herpes simplex myelitis (herpetic esophagitis — use B00.89 for other herpes simplex manifestations)	❌
B00.89	Other herpesviral infection (herpetic esophagitis)	❌
B25.89	Other cytomegaloviral diseases (CMV esophagitis)	❌
B20	HIV disease	✅ HCC 1
D84.9	Immunodeficiency, unspecified	✅ HCC 47

Immunocompromised Patients — HCC Capture

When 43197 is performed for evaluation of esophagitis in an immunocompromised patient (HIV (B20 — HCC 1), organ transplant, chemotherapy-related immunosuppression), ensure the underlying immunodeficiency is coded alongside the esophageal finding. HIV disease (B20) carries HCC 1 — one of the highest-weight HCC categories — and must be coded at every encounter where it is documented and managed.

Eosinophilic Esophagitis

ICD-10-CM	Description	HCC?
K20.0	Eosinophilic esophagitis	❌
K20.80	Other esophagitis without bleeding	❌
K20.81	Other esophagitis with bleeding	❌
K20.90	Esophagitis, unspecified, without bleeding	❌
K20.91	Esophagitis, unspecified, with bleeding	❌

Eosinophilic Esophagitis (EoE) — Code K20.0

Eosinophilic esophagitis (K20.0) is a distinct entity requiring histopathologic confirmation (≥15 eosinophils per high-power field on biopsy). When 43197 is performed for surveillance in a known EoE patient (no biopsy taken at this visit), code K20.0 as the indication. When biopsy is obtained → code 43198 instead. Note that TNE with brushing can be used for EoE surveillance cytology brushings (Cytosponge alternative), though biopsy remains the gold standard for EoE diagnosis.

---

🏨 MS-DRG Mapping

43197 — Primarily an Outpatient Procedure

43197 is overwhelmingly performed in the outpatient or office setting — it does not typically generate an inpatient admission. However, when 43197 is performed during an inpatient admission (e.g., as part of an inpatient workup for dysphagia, esophageal malignancy, or post-operative evaluation), the ICD-10-PCS equivalent drives DRG assignment alongside the principal diagnosis.

Esophageal / Gastroenterology DRGs (When Performed Inpatient)

MS-DRG	Description	Approx. Relative Weight
391	Esophagitis, Gastroenteritis, and Miscellaneous Digestive Disorders w/ MCC	~1.8–2.2
392	Esophagitis, Gastroenteritis, and Miscellaneous Digestive Disorders w/o MCC	~1.0–1.3
374	Digestive Malignancy w/ MCC	~2.8–3.2
375	Digestive Malignancy w/ CC	~1.7–2.1
376	Digestive Malignancy w/o CC/MCC	~1.0–1.3

Head & Neck / ENT DRGs (When Performed During H&N Admission)

MS-DRG	Description	Approx. Relative Weight
154	Other Ear, Nose, Mouth & Throat OR Procedures w/ MCC	~3.1–3.6
155	Other Ear, Nose, Mouth & Throat OR Procedures w/ CC	~2.0–2.4
156	Other Ear, Nose, Mouth & Throat OR Procedures w/o CC/MCC	~1.4–1.7

DRG Note — 43197 Is Rarely the Primary Driver of Inpatient Admission

43197 is typically performed as a diagnostic tool in the inpatient workup rather than as the procedure that drives DRG assignment. The principal diagnosis (e.g., dysphagia with dehydration, esophageal malignancy, aspiration pneumonia) and any concurrent therapeutic procedures are the primary DRG determinants. Document all contributing diagnoses and comorbidities to ensure optimal DRG assignment when 43197 is performed inpatient.

---

🌳 CPT Code Tree — Esophagoscopy & Related Procedures

Transnasal Esophagoscopy — 43197 Family
├── 43197 ← TRANSNASAL ESOPHAGOSCOPY; DIAGNOSTIC (THIS CODE)
│     └── Flexible or rigid; nasal access; no biopsy; brushing/washing included
│
└── 43198 — Transnasal Esophagoscopy; WITH BIOPSY
      └── Same approach; forceps tissue sampling (single or multiple)

Rigid Transoral Esophagoscopy (OR-based)
├── 43191 — Rigid esophagoscopy; diagnostic
├── 43192 — Rigid esophagoscopy; with biopsy
├── 43193 — Rigid esophagoscopy; with brushing or washing
├── 43194 — Rigid esophagoscopy; with removal of foreign body
├── 43195 — Rigid esophagoscopy; with balloon dilation
└── 43196 — Rigid esophagoscopy; with insertion of guide wire

Flexible Transoral Esophagoscopy (ASC/Hospital — Esophagus Only)
├── 43200 — Flexible transoral esophagoscopy; diagnostic
├── 43202 — Flexible esophagoscopy; with biopsy
├── 43204 — Flexible esophagoscopy; with injection of submucosal substance
├── 43205 — Flexible esophagoscopy; with band ligation of varices
├── 43206 — Flexible esophagoscopy; with optical endomicroscopy
├── 43210 — Esophagoscopy, flexible; with esophagogastric fundoplasty
├── 43212 — Flexible esophagoscopy; with stent placement
├── 43213 — Flexible esophagoscopy; with removal of esophageal stent
├── 43214 — Flexible esophagoscopy; with dilation of esophagus
├── 43215 — Flexible esophagoscopy; with removal of foreign body
├── 43216 — Flexible esophagoscopy; with endoscopic mucosal resection (EMR)
├── 43217 — Flexible esophagoscopy; with polypectomy
├── 43220 — Flexible esophagoscopy; with balloon dilation (less than 30 mm)
├── 43226 — Flexible esophagoscopy; with dilation, rigid dilator
└── 43228 — Flexible esophagoscopy; with ablation of lesion(s)

Upper GI Endoscopy — EGD (Esophagus + Stomach + Duodenum)
├── 43235 — EGD; diagnostic
├── 43236 — EGD; with directed submucosal injection
├── 43239 — EGD; with biopsy
├── 43240 — EGD; with transmural drainage of pseudocyst
├── 43241 — EGD; with transendoscopic ultrasound-guided transmural injection
├── 43242 — EGD; with transendoscopic ultrasound-guided intramural or transmural fine needle aspiration/biopsy
├── 43243 — EGD; with injection sclerosis of esophageal varices
├── 43244 — EGD; with band ligation of esophageal varices
├── 43245 — EGD; with dilation of gastric outlet for obstruction
├── 43246 — EGD; with directed placement of percutaneous gastrostomy tube
├── 43247 — EGD; with removal of foreign body(ies)
├── 43248 — EGD; with dilation of esophagus with balloon
├── 43249 — EGD; with dilation of esophagus up to 30 mm diameter
├── 43250 — EGD; with removal of tumor(s), polyp(s), or other lesion(s) by hot biopsy forceps
├── 43251 — EGD; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
├── 43252 — EGD; with optical endomicroscopy
├── 43253 — EGD; with transendoscopic ultrasound-guided transmural injection of diagnostic or therapeutic substance(s)
├── 43254 — EGD; with endoscopic mucosal resection (EMR)
├── 43255 — EGD; with control of bleeding, any method
├── 43257 — EGD; with delivery of thermal energy to muscle of lower esophageal sphincter and/or gastric cardia
└── 43259 — EGD; with endoscopic ultrasound examination including the esophagus, stomach, and duodenum

Laryngoscopy — Related ENT Procedures
├── 31575 — Laryngoscopy, flexible; diagnostic *(NCCI bundled with 43197)*
├── 31576 — Laryngoscopy, flexible; with biopsy
├── 31577 — Laryngoscopy, flexible; with removal of foreign body
├── 31578 — Laryngoscopy, flexible; with removal of lesion
└── 31579 — Laryngoscopy, flexible; with stroboscopy

Swallowing Function — Related
├── 92612 — FEES; physician examination; without physician interpretation
├── 92613 — FEES; physician examination with interpretation
├── 91010 — Esophageal motility study (manometry)
└── 91030 — Acid perfusion test (Bernstein test)

Esophageal Dilation — Separate Procedures
├── 43450 — Dilation of esophagus, unguided (balloon dilator)
└── 43453 — Dilation of esophagus over a guide wire

---

🗂️ ICD-10-PCS Context (Inpatient Coding)

Inpatient Coder Note (CIC Relevance)

In the inpatient acute care setting, 43197 is not assigned. All procedures are coded in ICD-10-PCS. Transnasal esophagoscopy maps to the Inspection root operation in the Gastrointestinal System body system.

ICD-10-PCS Root Operation for 43197 — Diagnostic TNE

Inspection — Diagnostic Esophagoscopy:

Axis	Value
Section	0 – Medical & Surgical
Body System	D – Gastrointestinal System
Root Operation	J – Inspection (visualizing the interior of a body part)
Body Part	5 – Esophagus
Approach	8 – Via Natural or Artificial Opening Endoscopic
Device	Z – No Device
Qualifier	Z – No Qualifier

Approach Value 8 — Via Natural or Artificial Opening Endoscopic

For TNE, the approach is 8 – Via Natural or Artificial Opening Endoscopic — the scope is passed through a natural body opening (nasal cavity → nasopharynx → esophagus) using an endoscope. This is the same approach value used for standard transoral flexible esophagoscopy. The transnasal vs. transoral distinction in access route is not captured in the ICD-10-PCS approach axis — both are approach 8.

Brushing/Washing in ICD-10-PCS

When brushing or washing specimen collection is performed during 43197, some facilities assign an additional ICD-10-PCS code for the specimen collection:

Axis	Value
Root Operation	B – Excision (if small tissue) or C – Extirpation or simply the Inspection code covers specimen collection per facility guidelines
OR	Map brushing/washing as integral to Inspection (J) — per facility ICD-10-PCS guidelines

Consult your facility’s ICD-10-PCS coding policies — some facilities code specimen collection by brushing as a separate ICD-10-PCS code; others consider it integral to the Inspection root operation.

Comparison — ICD-10-PCS for 43197 vs. 43198 vs. 43235

CPT	ICD-10-PCS Root Operation	Body Part	Approach	Additional Device
43197	J – Inspection	5 – Esophagus	8 – Endoscopic	Z – No Device
43198	B – Excision	5 – Esophagus	8 – Endoscopic	Z – No Device; X – Diagnostic
43235	J – Inspection	U – Stomach OR D – Upper Intestinal Tract	8 – Endoscopic	Z – No Device

43198 (with biopsy) → ICD-10-PCS Excision (B)

When biopsy is taken (→ 43198 in CPT), the ICD-10-PCS root operation changes from Inspection (J) to Excision (B) — “cutting out or off, without replacement, a portion of a body part.” The qualifier becomes X – Diagnostic to indicate the excision was for diagnostic purposes (tissue biopsy), not therapeutic. A separate Inspection code is generally not assigned when Excision is coded — Excision inherently includes the inspection component.

---

📝 Coding Examples

Example 1 — Diagnostic TNE for GERD Evaluation (Office-Based)

Clinical Scenario: 54-year-old female with chronic GERD symptoms on daily PPI for 3 years. Physician performs office-based TNE using a 5.1 mm flexible transnasal scope with topical anesthesia only. Esophageal mucosa visualized from UES to GEJ — mild erythema of the distal 3 cm; Z-line at 38 cm; no hiatal hernia identified; no Barrett’s changes appreciated. Vocal cords visualized during scope passage — bilateral cord mobility intact; mild posterior glottic erythema noted. No biopsy or brushing performed. Patient tolerates procedure well; returns to work immediately.

CPT Code:

• 43197 — Transnasal esophagoscopy, diagnostic (POS 11 — Office)

ICD-10-CM:

• K21.0 — GERD with esophagitis (principal — distal esophageal erythema = reflux esophagitis)
• J37.0 — Chronic laryngitis (additional — posterior glottic erythema, consistent with LPR)

---

Example 2 — TNE with Brushing for Barrett’s Surveillance

Clinical Scenario: 62-year-old male with known non-dysplastic Barrett’s esophagus (confirmed on prior EGD with biopsy 2 years ago; 3 cm segment). Presents for surveillance TNE — physician elects to perform office-based TNE rather than sedated EGD this cycle. TNE performed; salmon-colored columnar mucosa identified at GEJ from 36–39 cm; Z-line irregular. Brushing cytology performed (brush passed through working channel; esophageal mucosa abraded; specimen submitted for cytopathology). No forceps biopsy obtained. Cytology returns: no dysplasia.

CPT Code:

• 43197 — Transnasal esophagoscopy, diagnostic, including collection of specimen(s) by brushing (POS 11 — Office) (Brushing is bundled — no separate code for cytology collection)

ICD-10-CM:

• K22.70 — Barrett’s esophagus without dysplasia (principal — known diagnosis, cytology confirms no dysplasia this visit)

Pathology Billing — Cytopathology

The cytopathology evaluation of the brushing specimen is billed separately by the pathologist or laboratory — typically under CPT 88104 (cytopathology, fluids, washings, or brushings, except cervical or vaginal; smear with interpretation). The specimen collection (brushing) itself is bundled into 43197.

---

Example 3 — TNE During Laryngology Visit (LPR Workup)

Clinical Scenario: 41-year-old female with 6-month history of dysphonia, frequent throat clearing, and globus sensation. ENT performs flexible laryngoscopy as the primary procedure — vocal cords show posterior glottic edema, interarytenoid pachydermia, and arytenoid erythema consistent with LPR. To complete the evaluation, physician immediately performs transnasal esophagoscopy — scope passed through same nasal passage; esophagus examined from UES to GEJ. Distal 4 cm shows mucosal erythema; no Barrett’s, no stricture. No biopsy performed.

CPT Codes:

• 43197 — Transnasal esophagoscopy, diagnostic (primary procedure — higher value)
• 31575 — Flexible laryngoscopy, diagnostic (modifier -59 — verify NCCI; document separate indication and findings for each procedure; some payers bundle)

ICD-10-CM:

• K21.9 — GERD without esophagitis (principal — LPR coded under GERD framework)
• R49.0 — Dysphonia (additional — primary symptom)
• J38.4 — Edema of larynx (additional — posterior glottic edema confirmed)
• R09.89 — Other specified symptoms (globus sensation — additional)

43197 + 31575 NCCI Alert

Billing both 43197 and 31575 in the same encounter is subject to NCCI bundling edits. Some payers consider laryngeal visualization during TNE as integral to 43197 (bundling 31575). To support separate billing:

• Document independent clinical indications for each procedure
• Describe the laryngoscopy as a complete, distinct examination — not merely the en-passant laryngeal view during TNE insertion
• Describe the esophagoscopy as a complete, distinct examination of the esophagus
• Apply modifier -59 to 31575
• Verify current NCCI edits for this pairing

---

Example 4 — TNE for Post-Head and Neck Cancer Surveillance

Clinical Scenario: 59-year-old male, 18 months post-completion of chemoradiation for oropharyngeal SCC (base of tongue, T2N1M0). No evidence of recurrence on recent PET-CT. Presents for post-treatment surveillance. ENT performs TNE to assess the pharynx, larynx, and esophagus for post-radiation changes, stricture, or recurrence. Findings: mild posterior pharyngeal wall irregularity consistent with radiation changes; no mucosal lesion; mild radiation esophagitis in the cervical esophagus (20–25 cm); UES mildly hypertonic; GEJ normal. No biopsy.

CPT Code:

• 43197 — Transnasal esophagoscopy, diagnostic (post-cancer surveillance)

ICD-10-CM:

• Z09 — Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm (or use specific surveillance code)
• Z85.819 — Personal history of malignant neoplasm of unspecified site (if disease-free) (use active neoplasm code if still under treatment or recurrent disease)
• K22.89 — Other specified disease of esophagus (radiation esophagitis — additional)
• L58.0 — Acute radiodermatitis (or K22.89 for radiation esophageal changes)*

---

Example 5 — TNE for Dysphagia — Cricopharyngeal Hypertrophy Identified

Clinical Scenario: 71-year-old male with 4-month history of progressive oropharyngeal dysphagia — difficulty initiating swallow, food sticking at throat level. Barium swallow shows prominent cricopharyngeal bar. TNE performed in office — scope passed transnasally; cricopharyngeal prominence confirmed at UES (22 cm); mild resistance on scope passage; esophageal body and GEJ normal. No biopsy. Discussion of cricopharyngeal dysfunction; botulinum toxin injection or myotomy considered.

CPT Code:

• 43197 — Transnasal esophagoscopy, diagnostic

ICD-10-CM:

• R13.14 — Dysphagia, pharyngoesophageal phase (principal — oropharyngeal dysphagia at UES level)
• K22.4 — Dyskinesia of esophagus (cricopharyngeal hypertrophy/dysfunction — additional)

---

Example 6 — TNE in Immunocompromised Patient for Candidal Esophagitis Evaluation

Clinical Scenario: 38-year-old male with HIV (CD4 count 145 cells/µL) and complaint of odynophagia and dysphagia for 3 weeks. Oral candidiasis visible. TNE performed — whitish plaques identified diffusely in the esophageal body from 25–37 cm; friable mucosa. Brushings obtained and sent for fungal culture and cytology. Cytology returns: yeast and pseudohyphae consistent with Candida. Antifungal therapy initiated.

CPT Code:

• 43197 — Transnasal esophagoscopy, diagnostic, including collection of specimen(s) by brushing (brushing cytology bundled)

ICD-10-CM:

• B37.81 — Candidal esophagitis (principal — confirmed by cytology)
• B20 — HIV disease (additional — underlying immunocompromised state) (HCC 1)
• R13.10 — Dysphagia, unspecified (additional — presenting symptom)

---

Example 7 — TNE Non-Diagnostic Due to UES Spasm (Modifier -52)

Clinical Scenario: 66-year-old female with globus and suspected esophageal pathology. Office TNE attempted — scope passed successfully through nasal cavity to nasopharynx and hypopharynx; vocal cords visualized and documented (normal). On attempting passage through the UES, patient experienced UES spasm; scope could not be advanced into the esophagus despite multiple attempts with patient instruction and topical anesthesia augmentation. Cervical esophagus not examined; distal esophagus not seen. Procedure terminated. Patient referred for sedated EGD.

CPT Code:

• 43197 with modifier -52 — Transnasal esophagoscopy, diagnostic; reduced services (scope did not reach esophagus due to UES spasm; pharynx and larynx visualized only)

ICD-10-CM:

• R09.89 — Other specified symptoms (globus pharyngeus — indication)
• K22.4 — Dyskinesia of esophagus (UES spasm — identified at procedure)

---

⚠️ Common Coding Pitfalls

• 43197 vs. 43198 — biopsy is the only difference: If the operative/procedure report documents forceps biopsy of any esophageal tissue, the correct code is 43198 — not 43197. Brushing/washing does NOT trigger 43198; only forceps biopsy does. Downcoding 43198 to 43197 when biopsy was performed is a compliance issue. Upcoding 43197 to 43198 when no biopsy was performed is also a compliance issue.
• 31575 bundling with 43197: Billing both laryngoscopy and transnasal esophagoscopy in the same session is the most common NCCI bundling challenge for ENT practices using TNE. Document independent indications, complete separate procedure descriptions, and apply modifier 59 with payer verification before billing both.
• 43197 is NOT a component of 43235 (EGD): If a full upper GI endoscopy (EGD) is performed transorally in the same session, 43197 should not also be billed — the EGD subsumes the esophagoscopy. In practice, these are rarely performed simultaneously; if so, bill only 43235 (more comprehensive) and do not add 43197.
• Non-facility vs. facility RVU selection: Ensure the place of service (POS) code on the claim matches the actual setting. Billing POS 11 (office/non-facility) when the procedure was performed in a hospital outpatient department or ASC overstates the physician’s practice expense component. This is a common audit finding.
• Specimen collection coding: Do not separately bill for brushing or washing specimen collection — it is explicitly bundled into 43197 per the CPT descriptor (“including collection of specimen(s) by brushing or washing, when performed”). Separate billing for cytology collection is a NCCI violation.
• Pathology is separately billable — but by the pathologist: The physician performing 43197 does not bill for pathology interpretation of the brushing cytology. The pathologist bills separately under cytopathology codes. The physician bills only 43197 for the procedure.
• Modifier -52 documentation: When TNE is abbreviated (does not reach the distal esophagus or GEJ), modifier -52 is required. Document the extent of visualization achieved and the specific reason for early termination in the procedure note.
• Active vs. history malignancy codes: For surveillance of esophageal cancer, use active malignancy codes (C15.x) if disease is still present/active, and Z85.01 only if the patient is in complete remission with no evidence of disease.
• Inpatient setting — use ICD-10-PCS: 43197 is never coded for inpatient encounters. Use ICD-10-PCS root operation Inspection (J), body part Esophagus (5), approach Endoscopic (8).
• “Separate procedure” parenthetical: The CPT designation “(separate procedure)” means 43197 should not be billed as an add-on when it is a routine/integral component of a larger procedure at the same operative session. It IS billable as a standalone procedure when performed independently.
• Sedation billing: When topical anesthesia only is used (standard for office TNE), no sedation code is billable by the performing physician. If IV sedation is separately administered (unusual), it may be separately billable under moderate sedation codes — but verify that TNE + sedation does not migrate the encounter to an ASC/facility setting.

---

📚 Brief Source References

^{AMA CPT Professional Edition 2025, codes 43197–43198 and esophagoscopy section guidelines CMS Medicare Physician Fee Schedule Final Rule 2025 – Work RVU, facility/non-facility PE RVU, and payment indicator files (www.cms.gov/Medicare/Medicare-Fee-for-Service-Payment/PhysicianFeeSched) CMS NCCI Policy Manual for Medicare Services, Chapter 8: Surgery – Digestive System, 2025 CMS MS-DRG Definitions Manual v41 FY2024 – DRGs 391–392 Esophagitis/Gastroenteritis; 374–376 Digestive Malignancy ICD-10-PCS Official Guidelines for Coding and Reporting FY2025 – Section B3 Root Operations: Inspection (J), Excision (B) ICD-10-CM Official Guidelines for Coding and Reporting FY2025 – Section I.C.2 Neoplasms; Section I.C.11 Digestive System Postma GN, Cohen JT, Belafsky PC, et al. Transnasal esophagoscopy: revisited (over 700 consecutive cases). Laryngoscope 2005;115(2):321–323 Amin MR, Postma GN, Johnson P, et al. Transnasal esophagoscopy: a position statement from the American Bronchoesophagological Association (ABEA). Otolaryngol Head Neck Surg 2008;138(4):411–414 AAPC CPC/CIC Study Guide – Surgery: Digestive System / Esophagoscopy chapter American Gastroenterological Association. Clinical Practice Update on Transnasal Esophagoscopy. Gastroenterology 2020}