J34.2

J34.2 - Deviated Nasal Septum

Short Definition

Deflection or deviation of the nasal septum (acquired), causing asymmetry of the two nasal passages, often leading to nasal obstruction, breathing difficulty, and associated symptoms.

Long Definition

J34.2 identifies a deflection or deviation of the nasal septum that has been acquired rather than congenitally present. The nasal septum is the thin wall of bone and cartilage that divides the nasal cavity into two separate passageways. In an ideal anatomy, the septum runs directly down the midline of the nose; in a deviated septum, it has shifted to one side — or in complex C-shaped or S-shaped deviations, to both sides at different levels.

Acquired deviated nasal septum develops as a result of nasal trauma (most commonly), facial fractures, prior nasal surgery with post-operative scar contracture, and in some cases progressive cartilaginous growth changes over time. The deviation may involve the bony portion (perpendicular plate of the ethmoid or the vomer), the cartilaginous portion (quadrangular cartilage), or both. The clinical significance of a deviated septum depends primarily on the degree of deviation and whether it compromises nasal airflow. Even modest deviations can block a nasal passage, obstruct sinus drainage pathways, predispose to chronic sinusitis, contribute to sleep-disordered breathing, cause recurrent epistaxis due to turbulent airflow, or create secondary hypertrophy of the inferior turbinate on the contralateral (open) side as a compensatory response.

When a deviated septum is identified as the underlying cause of nasal valve collapse, ICD-10-CM specifically instructs coders to “code first underlying cause, such as deviated nasal septum J34.2” before assigning J34.82- (Nasal valve collapse). This sequencing relationship makes J34.2 a critical etiologic code in ENT practice.

Area of Body

Nose and Nasal Cavity

• Nasal septum: quadrangular cartilage (anterior), perpendicular plate of ethmoid (superior/posterior), vomer (inferior/posterior)
• Nasal passages: right and/or left nasal cavity depending on direction of deviation
• Nasal valve area: internal and external nasal valves may be secondarily compromised
• Adjacent structures potentially affected: inferior turbinates (compensatory hypertrophy), nasal mucosa (mucosal changes from altered airflow), paranasal sinuses (impaired drainage), nasopharynx

Code Hierarchy / Tree

J00-J99: Diseases of the respiratory system
└─ J30-J39: Other diseases of upper respiratory tract
└─ J34: Other and unspecified disorders of nose and nasal sinuses
Excludes2:
[[varicose]] ulcer of nasal septum ([[I86.8]])
├─ [[J34.0]] [[Abscess]], [[furuncle]] and [[carbuncle]] of nose
│ ([[Cellulitis]] of nose; [[Necrosis]] of nose; Ulceration of nose)
├─ [[J34.1]] Cyst and mucocele of nose and nasal sinus
├─ [[J34.2]] Deviated nasal septum ← this code
│ Deflection or deviation of septum nasal acquired
├─ [[J34.3]] Hypertrophy of nasal turbinates
└─ [[J34.8]] Other specified disorders of nose and nasal sinuses
├─ [[J34.81]] Nasal mucositis ulcerative
├─ [[J34.82]] Nasal valve collapse
│ Code first underlying cause, such as: deviated nasal septum (J34.2)
│ ├─ J34.820 Internal nasal valve collapse
│ │ ├─ [[J34.8200]] Internal, unspecified
│ │ ├─ [[J34.8201]] Internal, static
│ │ └─ [[J34.8202]] Internal, dynamic
│ ├─ J34.821 External nasal valve collapse
│ │ ├─ [[J34.8210]] External, unspecified
│ │ ├─ [[J34.8211]] External, static
│ │ └─ [[J34.8212]] External, dynamic
│ └─ [[J34.829]] Nasal valve collapse, unspecified
└─ [[J34.89]] Other specified disorders of nose and nasal sinuses
(Perforation of nasal septum NOS; Rhinolith)

Adjacent Excludes2 from parent M95: This means M95.0 and J34.2 are distinct codes — an acquired external deformity of the nose (M95.0) is separately classified and can coexist with J34.2.

Includes

The following terms are included under J34.2 and should be coded here:

• Deflection of nasal septum (acquired)
• Deviation of nasal septum (acquired)
• Septal deviation (acquired), nasal
• Deviated septum (acquired) — unilateral or bilateral
• Post-traumatic nasal septal deviation
• Post-surgical nasal septal deviation (when not meeting criteria for a more specific complication code)
• Septal spur causing nasal obstruction (acquired)
• C-shaped or S-shaped septal deviation (acquired)
• Septal deviation with inferior turbinate hypertrophy (the turbinate hypertrophy is additionally coded with J34.3)

Excludes 1

These conditions cannot be coded simultaneously with J34.2 because they are mutually exclusive alternatives:

• Q67.4 - Congenital deviated nasal septum; if the deviation is documented as congenital (present at birth), assign Q67.4 instead of J34.2. When documentation is unclear, query the provider.

Excludes 2

The following codes may be assigned in addition to J34.2 when independently documented and clinically distinct:

• J34.3 - Hypertrophy of nasal turbinates; commonly coexists with septal deviation due to compensatory turbinate enlargement on the contralateral side; code additionally when documented
• J34.820-J34.829 - Nasal valve collapse; when deviated septum is the underlying cause, J34.2 is sequenced first (see “Code First” instruction under J34.82)
• J34.89 - Perforation of nasal septum NOS or other specified nasal disorders; may coexist
• J32.- - Chronic sinusitis; deviated septum can impair sinus drainage and lead to chronic sinusitis; code separately when documented
• G47.33 - Obstructive sleep apnea; septal deviation can contribute to OSA; report separately when documented
• R06.5 - Mouth breathing; may be a clinical consequence; code separately when documented
• J30.- - Allergic or vasomotor rhinitis; frequently coexists with septal deviation
• I86.8 - Varicose ulcer of nasal septum; the parent code J34 carries Excludes2 for this; code both if present
• M95.0 - Acquired deformity of nose (external); may coexist with J34.2 (internal septal deviation); per Excludes2 note on M95.0
• S09.92XA/S09.92XD/S09.92XS - Unspecified injury of nose (for acute/initial trauma-related encounters), followed by J34.2 for subsequent post-traumatic deviation

HCC Information

HCC Status: Non-HCC

• J34.2 does not map to any Hierarchical Condition Category under CMS-HCC or ESRD risk adjustment models.
• Does not contribute to RAF (Risk Adjustment Factor) scoring.
• No chronic disease flag for risk-adjustment purposes.
• Not a quality measure condition in most HEDIS or CMS quality programs.
• Functions as a non-CC (non-complication/non-comorbidity) in MS-DRG logic; does not drive DRG weight upward as a secondary diagnosis.

RVU Information

wRVU: N/A

• ICD-10-CM diagnosis codes carry no work RVUs.
• For reference, the primary associated procedure — septoplasty (CPT 30520) — carries approximately 5.39 wRVU in the AMA RVS schedule.
• Combined septoplasty and inferior turbinoplasty (30520 + 30130 or 30140) combined carry additional wRVU.
• Endoscopic septoplasty (when billed) uses 30520 with appropriate documentation.

Total RVU: N/A (diagnostic code)

Assistant Surgeon Payable:

• N/A for the diagnostic code itself.
• Septoplasty (30520): assistant surgeon generally not payable under standard CMS indicators for simple/routine cases. The CMS assistant surgeon indicator for 30520 is typically “1” (payable when documented that the procedure requires a secondary surgeon).
• If performed concomitantly with rhinoplasty (30400-30420), FESS, or other complex procedures, assistant surgeon eligibility increases. Always verify payer-specific policies, especially for complex combined ENT cases.

MS-DRG Information

MDC Assignment: MDC 03 - Diseases & Disorders of the Ear, Nose, Mouth & Throat

When J34.2 is the Principal Diagnosis (with procedure):

• DRG 011 - Laryngoscopy & Other ENT OR Procedures with MCC
• DRG 012 - Laryngoscopy & Other ENT OR Procedures with CC
• DRG 013 - Laryngoscopy & Other ENT OR Procedures without CC/MCC
  • These DRGs apply when septoplasty (CPT 30520 / ICD-10-PCS 09SM) is performed as the OR procedure.

When J34.2 is the Principal Diagnosis (without major OR procedure):

• DRG 154 - Other Ear, Nose, Mouth & Throat Diagnoses with MCC
• DRG 155 - Other Ear, Nose, Mouth & Throat Diagnoses with CC
• DRG 156 - Other Ear, Nose, Mouth & Throat Diagnoses without CC/MCC

Key MS-DRG Note:

• J34.2 is rarely a principal diagnosis for inpatient admissions; most septal deviation management occurs in the outpatient/ambulatory surgery setting.
• When combined with rhinoplasty, the DRG may shift to head and neck surgical DRGs depending on the principal procedure grouping.
• POA indicator should be Y (present on admission) in virtually all inpatient cases, as the deviation pre-dates the admission.

Common CPT Codes Used With J34.2

Evaluation & Management

• 99213-99215 - Office E/M, established patient (ENT/otolaryngology follow-up)
• 99202-99205 - Office E/M, new patient (initial consultation with ENT for nasal obstruction)
• 99241-99245 - Office consultations (if applicable; most commercial payers no longer recognize these; use 99202-99215 instead)

Diagnostic Evaluation

• 31231 - Nasal endoscopy, diagnostic (unilateral or bilateral); commonly performed at initial ENT visit to visualize septal deviation, turbinate hypertrophy, and nasal polyps
• 31237 - Nasal/sinus endoscopy, surgical; biopsy/polypectomy/debridement (when lesions are encountered)
• 70486 - CT scan of maxillofacial area without contrast; commonly obtained pre-operatively to plan septoplasty, visualize spur location, and assess sinus anatomy
• 70480 - CT scan of soft tissue neck without contrast (less common; if orbital/facial involvement suspected)
• 92551 - Screening test, pure tone audiometry (if eustachian tube dysfunction associated)

Procedural Treatment

Septoplasty:

• 30520 - Septoplasty or submucous resection, with or without cartilage scoring, contouring or replacement with graft — the primary CPT for surgical correction of J34.2. This is the most commonly paired procedure.

Turbinate Surgery (frequently combined):

• 30130 - Excision inferior turbinate, partial or complete, any method
• 30140 - Submucous resection inferior turbinate, partial or complete, any method
• 30801 - Ablation, soft tissue of inferior turbinates, unilateral or bilateral, any method (surgical); radiofrequency or electrocautery
• 30802 - Ablation, intramural, inferior turbinates, unilateral or bilateral, any method (thermal ablation)

Rhinoplasty (when cosmetic or functional deformity coexists):

• 30400 - Rhinoplasty, primary; lateral and alar cartilages and/or elevation of nasal tip
• 30410 - Rhinoplasty, primary; complete, external parts including bony pyramid, lateral and alar cartilages, and/or elevation of nasal tip
• 30420 - Rhinoplasty, primary; including major septal repair
• 30430 - Rhinoplasty, secondary; minor revision (small amount of nasal tip work)
• 30450 - Rhinoplasty, secondary; major revision (nasal tip, osteotomies)
• 30460 - Rhinoplasty for nasal deformity secondary to congenital cleft lip and/or palate, including columellar lengthening

Important billing note: When a functional septoplasty (30520) is performed at the same time as a cosmetic rhinoplasty (304xx), payers will often pay only the functional component. Modifier -59 or XS may be needed to separate the procedures. Medical necessity must support the functional septoplasty; purely cosmetic rhinoplasty is not covered by most payers.

Nasal Valve Repair (if J34.2 causes nasal valve collapse J34.82-):

• 30465 - Repair of nasal vestibular stenosis (e.g., spreader grafts, lateral nasal wall reconstruction)
• 30468 - Repair of nasal valve collapse with low energy, temperature-controlled (radiofrequency) subcutaneous/submucosal remodeling (Vivaer/VivAer procedure)

In-Office Procedures:

• 30000 - Drainage abscess or hematoma, nasal, internal approach
• 30901 - Control nasal hemorrhage, anterior, simple (non-surgical) — may be needed when septal deviation causes recurrent epistaxis
• 30905 - Control nasal hemorrhage, posterior, with posterior nasal packs and/or cauterization

Common Modifiers

Modifier	Description	Usage Context with J34.2
-50	Bilateral procedure	When bilateral turbinoplasty (30130, 30140, 30801) is performed; NOT applicable to septoplasty (30520), which is inherently bilateral
-22	Increased procedural services	When septoplasty is significantly more complex than typical (severe spur, multiple revision areas, extensive cartilage grafting)
-59	Distinct procedural service	When turbinoplasty (30130/30140) is billed same-day as septoplasty (30520), to establish separate identity; alternate: modifier -XS
-LT / -RT	Left side / Right side	For unilateral turbinate procedures when applicable
-52	Reduced services	When planned procedure was partially performed (e.g., planned bilateral but only unilateral completed)
-53	Discontinued procedure	If procedure was started but discontinued due to patient condition (anesthesia complication, etc.)
-TC	Technical component	For imaging (CT scan 70486) when facility is billing separately from the interpreting physician
-26	Professional component	Radiologist’s interpretation of CT without contrast (70486)
-57	Decision for surgery	When the E/M visit immediately prior (same day or day before) to septoplasty resulted in the decision to proceed with surgery
-25	Significant, separate E/M	When an E/M is performed on the same day as a minor procedure (such as nasal endoscopy 31231) and is separately and distinctly documented

Modifier -50 vs. bilateral billing clarification for turbinate procedures:

• 30801 and 30802: when performed bilaterally, report with modifier -50 on the same line, OR report twice on separate lines (payer dependent).
• 30520 (septoplasty): the nasal septum is a single midline structure; do not append -50 or -LT/-RT.

Coding Examples

Example 1: New Patient Evaluation, No Surgery Planned

Scenario: 38-year-old presents to ENT for left-sided chronic nasal obstruction, worse at night, with chronic mouth breathing. Nasal endoscopy confirms moderate leftward deviation of the caudal septum with a bony spur at the junction of the quadrangular cartilage and vomer. Mild compensatory right inferior turbinate hypertrophy noted. Provider counsels patient on septoplasty with turbinoplasty; patient deferred surgery.

ICD-10-CM:

• J34.2 - Deviated nasal septum
• J34.3 - Hypertrophy of nasal turbinates (right, compensatory — document specifically)

CPT:

• 99204-25 - Office visit, new patient, moderate complexity (E/M, documented separately and distinctly from the nasal endoscopy)
• 31231 - Diagnostic nasal endoscopy (bilateral)

Documentation requirements:

• Chief complaint of nasal obstruction; duration and laterality
• Anterior rhinoscopy findings
• Nasal endoscopy findings: specific location of septal deviation (caudal, middle vault, posterior bony), presence/absence of spurs, contact points, turbinate appearance, nasal polyps/mucosa
• Plan: medical management and/or surgery counseling

---

Example 2: Septoplasty with Bilateral Inferior Turbinoplasty

Scenario: Patient with longstanding J34.2 and bilateral J34.3 (turbinate hypertrophy) presents for surgical management. Surgeon performs submucous resection of the nasal septum addressing caudal deviation and bony spur, plus bilateral submucous resection of inferior turbinates.

ICD-10-CM:

• J34.2 - Deviated nasal septum (principal diagnosis)
• J34.3 - Hypertrophy of nasal turbinates (secondary diagnosis — supports turbinate procedure)

CPT:

• 30520 - Septoplasty or submucous resection
• 30140-50 - Submucous resection inferior turbinate, bilateral (modifier -50 for bilateral)
  • Alternatively: 30140-LT and 30140-RT on separate lines, per payer preference

OR on separate lines:

• 30520
• 30140-59 (first turbinate side, with -59 to indicate distinct service from septoplasty)
• 30140-59-50 or second line with RT/LT

Note: Many payers bundle turbinate procedures with septoplasty. Check specific payer bundles. Medical necessity documentation for turbinate hypertrophy must be separate and explicit to avoid denial.

Documentation requirements (operative note must include):

• Pre-operative diagnosis: deviated nasal septum; turbinate hypertrophy bilateral
• Description of septum: type of deviation (caudal, cartilaginous, bony, C-shape, spur), extent of deviated area addressed
• Turbinate: approach used (submucous vs. outfracture vs. ablation), bilateral or unilateral
• Hemostasis method, packing placed (if any)
• Post-operative diagnosis (must match pre-operative)

---

Example 3: Septoplasty with Secondary Nasal Valve Collapse

Scenario: 52-year-old with documented J34.2 (severe rightward caudal septal deviation) and resulting internal nasal valve collapse (J34.8201 — static, right). Provider performs septoplasty and spreader graft repair of right internal nasal valve.

ICD-10-CM Sequencing (per code-first instruction at J34.82-):

• J34.2 - Deviated nasal septum (sequenced first as the underlying cause)
• J34.8201 - Internal nasal valve collapse, static (right), sequenced second

CPT:

• 30520 - septoplasty
• 30465 - Repair of nasal vestibular stenosis (e.g., spreader graft for internal nasal valve)

Critical sequencing note: The tabular instruction under J34.82 states “Code first underlying cause, such as deviated nasal septum J34.2.” This is a mandatory sequencing instruction. If J34.2 is the cause, it must appear before J34.82- in the diagnosis list.

---

Example 4: Septoplasty Combined with Functional Rhinoplasty

Scenario: Patient has J34.2 with external nasal deformity (saddle nose deformity from old traumatic nasal fracture). Surgeon performs septoplasty (for functional nasal obstruction) and external rhinoplasty with spreader grafts (for correction of the external deformity with functional impact on nasal airway).

ICD-10-CM:

• J34.2 - Deviated nasal septum
• M95.0 - Acquired deformity of nose (saddle nose deformity from trauma)
  • Per Excludes2 on M95.0: deviated nasal septum (J34.2) is listed under Excludes2, meaning both codes can and should be assigned when both conditions are independently present and documented.

CPT:

• 30520 - Septoplasty (functional component, covered by insurance with medical necessity documentation)
• 30410 - Rhinoplasty, primary, complete (external deformity correction)
  • Payer note: The rhinoplasty (30410) may be denied if deemed cosmetic. Functional rhinoplasty requires separate medical necessity documentation demonstrating that the external deformity contributes to nasal airway obstruction. Modifier -59 or distinct line billing separates the two procedures.

---

Example 5: Pediatric Patient — Congenital vs. Acquired (Query Needed)

Scenario: 15-year-old presents with nasal obstruction. Documentation states “deviated nasal septum.” There is no documented history of nasal trauma and no notation as to whether the deviation is congenital.

Coding guidance:

• J34.2 specifically states “acquired” in the Includes notes (“Deflection or deviation of septum nasal acquired”).
• Q67.4 is for congenital deviated nasal septum.
• When documentation is silent on etiology, a provider query is indicated to determine: “Is the deviated nasal septum congenital (present since birth) or acquired (developed after injury, surgery, or during growth)?”
• In the absence of a query result, if the provider simply documents “deviated nasal septum” without specifying, J34.2 may be used as the default in most clinical documentation improvement programs, as isolated congenital deviation is less common and requires explicit documentation.
• Do NOT assume Q67.4 without provider confirmation.

---

Example 6: Outpatient Surgery with Sinusitis

Scenario: Patient has chronic maxillary sinusitis (J32.0) and nasal obstruction secondary to J34.2. ENT performs septoplasty (30520) and functional endoscopic sinus surgery (FESS) — bilateral maxillary antrostomies (31256 bilateral).

ICD-10-CM:

• Principal diagnosis: J34.2 - Deviated nasal septum (or J32.0 if sinusitis is the dominant reason for surgery — discuss with provider which was the primary indication)
• J32.0 - Chronic maxillary sinusitis
• J34.3 - Turbinate hypertrophy, if present

CPT:

• 30520 - Septoplasty
• 31256-50 - Nasal/sinus endoscopy, surgical, maxillary antrostomy, bilateral (modifier -50)

Note: When septoplasty and FESS are combined, documentation must support medical necessity for each separately. FESS and septoplasty are separately payable and not bundled under CCI (Correct Coding Initiative) edits, but modifier -59 or XS may be needed depending on payer.

---

Example 7: Intraoperative Nasal Valve Collapse Discovered During Workup

Scenario: Patient referred for nasal obstruction. CT of maxillofacial area demonstrates rightward septal deviation and narrowing at the internal nasal valve on the right. Nasal endoscopy confirms static internal nasal valve collapse right side, caused by the deviation.

ICD-10-CM (per code-first instruction at J34.82):

• J34.2 - Deviated nasal septum (code first — underlying cause)
• J34.8201 - Internal nasal valve collapse, static, right

CPT:

• 31231 - Diagnostic nasal endoscopy
• 70486 - CT maxillofacial without contrast (if ordered and interpreted same visit)
  • 70486-26 - Radiologist interpretation component

---

Documentation Requirements

Physicians must document the following to substantiate J34.2 and support associated procedures:

1. Location of deviation: caudal, middle vault, posterior bony, or combination; specify C-shaped or S-shaped if applicable
2. Laterality of deviation: which side the septum deviates toward (e.g., “rightward deviation of caudal cartilage”)
3. Acquired vs. congenital: critical to distinguish J34.2 from Q67.4; document history of trauma or prior nasal surgery if applicable
4. Functional impact: nasal obstruction, difficulty breathing through one or both nares, sleep disturbance, mouth breathing, recurrent sinusitis, epistaxis
5. Endoscopic findings: confirm deviation on nasal endoscopy; note contact between septum and turbinate, mucosal changes, nasal valve compromise
6. Medical necessity for surgery: documentation that conservative management (decongestants, nasal steroids, saline rinse) was trialed and was inadequate, or that the anatomical severity warrants direct surgical intervention
7. Associated diagnoses separately documented: if turbinate hypertrophy (J34.3), sinusitis (J32.-), nasal polyps (J33.-), or nasal valve collapse (J34.82-) are present, each must be separately documented and supported
8. For combined septoplasty and rhinoplasty: clear documentation distinguishing functional from aesthetic components, with separate medical necessity statements for each

Clinical Considerations

• Prevalence: Deviated nasal septum is one of the most common conditions seen in otolaryngology practice; studies suggest that up to 80% of adults have some degree of septal deviation, though only a minority are symptomatic enough to require surgical intervention.
• Conservative management first: Most payers require documentation of failed medical therapy (3-6 months of topical nasal corticosteroids, saline irrigation, and decongestants) before authorizing septoplasty.
• Prior authorization: Septoplasty (30520) virtually always requires prior authorization. Bundling rules with turbinoplasty vary by payer.
• Global period: CPT 30520 carries a 90-day global period. Any related E/M or procedure during the global period requires appropriate modifiers (-24, -25, -78, -79).
• Coding trap — functional vs. cosmetic: Payers scrutinize combined septoplasty/rhinoplasty claims heavily. Rhinoplasty alone without functional indication is cosmetic and non-covered. Medical necessity documentation must address each component independently.
• Turbinate pairing: When turbinate hypertrophy is documented alongside septal deviation, code J34.3 as a secondary diagnosis. This supports the medical necessity of turbinoplasty (30130/30140/30801) which would otherwise be a separate and potentially disputed CPT.
• Pediatric considerations: Surgical correction of septal deviation in children is generally deferred until skeletal maturity (typically age 16-18) to avoid disruption of facial growth centers. If surgery is performed earlier, documentation of compelling medical necessity (severe obstruction affecting sleep, feeding, or development) is essential.

---

Last Updated: FY 2026 ICD-10-CM Code Status: Active/Billable CCSR Category: RSP011 — Acquired deformities of nasal septum and turbinates