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42700

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🩺 CPT Code 42700: Documentation & Billing Guide

Biopsy of Palate, Uvula, and/or Posterior Pharyngeal Wall

Last Updated: February 2026
Status: 2025 Medicare Fee Schedule Compliant
Specialty Tags:

QUICK REFERENCE

ElementDetails
Code42700
Code TypeDiagnostic Procedure - ENT/Oral Surgery
Procedure TypeTissue biopsy from palate, uvula, and/or posterior pharyngeal wall
Global Period000 days (office procedure, no bundled post-op)
Work RVU (2025)0.73 RVU
Practice Expense RVU (2025, Non-Facility)0.54 RVU
Practice Expense RVU (2025, Facility)0.23 RVU
Malpractice RVU (2025)0.06 RVU
Total RVU (2025, Non-Facility)1.33 RVU
Total RVU (2025, Facility)1.02 RVU
2025 Medicare Fee (Non-Facility)~32.3465 CF × GPCI)
2025 Medicare Fee (Facility)~32.3465 CF × GPCI)
Conversion Factor (2025)$32.3465
Estimated Commercial Insurance$100 - 300
Global Period IncludesSame-day procedure only; no bundled post-op visits
Common Place of ServiceOffice (11), Hospital outpatient (22), ASC (24), ED (23)
SpecialtyOtolaryngology (ENT), Oral & Maxillofacial Surgery, Dentistry
Procedure Time5-15 minutes

📋SHORT DEFINITION

CPT 42700 describes a diagnostic biopsy of tissue from the palate, uvula, and/or posterior pharyngeal wall. This procedure involves obtaining tissue samples from one or more intraoral sites (hard palate, soft palate, uvula, posterior pharyngeal wall) for microscopic examination and diagnosis of suspected pathology (malignancy, infection, inflammatory disease, etc.).

LONG DEFINITION

CPT 42700 represents a tissue biopsy procedure targeting the oral cavity and pharynx. It is used diagnostically to obtain tissue specimens for histopathologic analysis of suspected oral or pharyngeal lesions.

Clinical Indications for 42700

Suspected Malignancy:

  • Oral squamous cell carcinoma (hard palate, soft palate)
  • Oropharyngeal carcinoma
  • Salivary gland tumors (palatal tumors)
  • Lymphoma (pharyngeal involvement)

Infectious Diseases:

Inflammatory/Autoimmune Conditions:

Other Indications:

  • Unexplained ulcers or lesions
  • Persistent erythema or discoloration
  • Suspicious masses
  • Palatal perforations (to assess for vasculitis, syphilis, etc.)

Procedure Technique

Office-Based Biopsy (Most Common):

  • Patient positioned reclined or semi-reclined
  • Visualization of lesion using headlight, mirror, or intraoral camera
  • Local anesthesia (topical or infiltration)
  • Tissue obtained via:
    • Punch biopsy: Using punch biopsy forceps (3-4mm specimen)
    • Incisional biopsy: Scalpel or scissors to obtain tissue specimen
    • Shave biopsy: Razor blade or scalpel to obtain superficial specimen
  • Single or multiple specimens obtained from lesion
  • Hemostasis achieved (cautery, sutures, pressure, topical hemostatic agent)
  • Specimen placed in formalin fixative and sent for histopathology
  • Simple wound closure if needed (typically self-limiting due to intraoral location and good vascular supply)

Procedure Duration: Typically 5-15 minutes

Key Distinctions:

  • CPT 42700 = Biopsy of palate, uvula, and/or posterior pharyngeal wall (specific location code)
  • CPT 88305 = Oral pathology service (histology interpretation—different provider, pathologist)
  • CPT 11100-11101 = Skin biopsy (not used for intraoral biopsies)

Important Note:

CPT 42700 is used for biopsies specifically of the palate, uvula, and posterior pharyngeal wall. Biopsies of other intraoral sites (tongue, cheek, floor of mouth, gingiva) may use different codes depending on location.

WORK RELATIVE VALUE UNITS (wRVUs) & COMPONENTS

Work RVU Breakdown (2025)

RVU ComponentValueWhat It Represents
Work RVU0.73Physician work, technical skill, decision-making
Practice Expense RVU (non-facility)0.54Biopsy equipment, instruments, specimen handling, office staff
Practice Expense RVU (facility)0.23Lower due to hospital/ASC equipment overhead
Malpractice RVU0.06Malpractice insurance and liability (low-risk outpatient procedure)
TOTAL RVU (non-facility)1.33Total relative value units
TOTAL RVU (facility)1.02Total relative value units (lower)

RVU Conversion to Dollar Amount (2025)

Formula: RVU × Conversion Factor (CF) × Geographic Practice Cost Index (GPCI) = Payment

2025 Medicare Conversion Factor: $32.3465

Typical Calculations (Non-Facility, GPCI = 1.0):

  • 0.73 wRVU × 23.61** (work component)
  • 0.54 PE RVU × 17.47** (practice expense)
  • 0.06 MP RVU × 1.94** (malpractice)
  • Total = ~$43.04 per procedure (non-facility, GPCI 1.0)

Facility-Based (Hospital/ASC):

  • 0.73 wRVU × 23.61** (work component, same)
  • 0.23 PE RVU × 7.44** (practice expense, lower)
  • 0.06 MP RVU × 1.94** (malpractice, same)
  • Total = ~$33.01 per procedure (facility, GPCI 1.0)

Real-World Range (2025):

  • Non-Facility (Office): $40 - 50 (depending on GPCI)
  • Facility-Based (Hospital OR, ASC): $30 - 38 (lower PE RVU)

GLOBAL PERIOD

Global Period Status: 000 days (Zero-Day Global)

What This Means:

  • CPT 42700 is a procedure with NO global period
  • There are NO pre-operative or post-operative days bundled
  • The code includes only the procedure on the date of service
  • No global period modifiers (-54, -55, -56) are needed
  • Post-operative follow-up visits are separately billable

Billing Implications:

  • Patient follow-up for biopsy results or complications = separate E/M code (99212-99215 established, 99201-99205 new)
  • Same-day E/M + 42700 can be billed together with modifier -25 (separate, identifiable E/M)
  • Example: 99213-25 (E/M for palatal lesion evaluation) + 42700 (biopsy)

DOCUMENTATION REQUIREMENTS FOR 42700

Minimum Documentation Components

Indication/History:

  • Chief Complaint: Palatal lesion, pharyngeal mass, suspicious growth, ulcer, etc.
  • History of Present Illness: Duration of lesion, symptoms (pain, bleeding, difficulty swallowing), progression
  • Relevant Medical History: Prior oral lesions, tobacco/alcohol use, immunosuppression, suspicious symptoms (weight loss, lymphadenopathy)
  • Imaging or Prior Evaluation: Description of lesion (location, size, color, appearance), any imaging findings
  • Risk Factors: Tobacco, alcohol, HPV exposure, immunosuppression

Procedure Description:

  • Site of Biopsy: Palate (hard palate vs. soft palate), uvula, posterior pharyngeal wall
  • Lesion Description: Size (mm), color, appearance, surface characteristics, borders
  • Anesthesia: Type used (topical, local infiltration, general)
  • Biopsy Technique: Punch biopsy, incisional, shave, or other method
  • Number of Specimens: Single or multiple specimens obtained
  • Hemostasis: Method used (cautery, pressure, sutures, topical hemostatic agent, self-limited)
  • Complications: None vs. excessive bleeding, difficulty obtaining adequate specimen, other issues

Specimen Handling:

  • Specimen Quality: Adequate vs. inadequate for diagnosis
  • Specimen Fixative: Formalin (standard)
  • Pathology Order: Location(s) biopsied, specific pathology concern documented

Post-Operative Instructions:

  • Activity: Dietary restrictions, oral care instructions
  • Bleeding Precautions: If applicable
  • Follow-up: When to expect results, when to return

BILLING RULES & MODIFIERS

Global Period Coverage

What’s Included in 42700: ✓ The biopsy procedure itself ✓ Specimen collection and fixation ✓ Local anesthesia

✗ NOT Included (Can bill separately):

  • E/M visit (even same day) - requires modifier -25
  • Pathology interpretation (CPT 88305 or higher) - separate charge, billed by pathologist
  • Imaging (if needed pre-biopsy) - separate code

Common Modifiers

ModifierDescriptionWhen to Use
-25Significant, separately identifiable E/MWhen billing E/M same day; apply to E/M, not 42700
-59Distinct procedural serviceWhen billing multiple biopsies different sites (rare)
-LT/-RTLeft/Right sideIf biopsy clearly from one side (rarely used with 42700)
None (most common)Standard billingRoutine single biopsy

Modifier -25 Usage (Common):

  • When: Patient presents with intraoral lesion; provider evaluates AND performs biopsy same day
  • Apply -25 to: The E/M code, not the biopsy code
  • Example: 99213-25 (E/M for lesion evaluation) + 42700 (biopsy)

MEDICARE RULES FOR 42700

CMS-Specific Rules & Policies

1. Global Period Management

  • Zero-day global period - no pre-op or post-op visits bundled
  • Follow-up visits for results or complications = separately billable

2. Facility vs. Non-Facility Billing

  • Non-Facility (office): Higher PE RVU (0.54), higher reimbursement (~$43)
  • Facility (hospital, ASC): Lower PE RVU (0.23), lower reimbursement (~$33)
  • Facility bills separately for facility charges

3. E/M + Biopsy Billing (Common Scenario)

  • Can bill 42700 + E/M same day with modifier -25 on E/M
  • E/M must be separately identifiable (not routine to biopsy)
  • Example: 99213-25 + 42700

4. Specimen/Pathology Coding

  • 42700 includes only surgical removal
  • Pathology interpretation (CPT 88305 or higher) billed separately by pathologist
  • Facility does not bill pathology; pathologist bills directly

LOCAL COVERAGE DETERMINATIONS (LCDs) & NATIONAL COVERAGE

National Coverage Determination (NCD)

There is NO specific NCD for CPT 42700.

General Medicare Coverage Policy:

  • Biopsies covered when medically necessary to evaluate lesions
  • Must have documented clinical indication (suspected pathology)
  • Must be ordered by physician with appropriate diagnosis code

Local Coverage Determinations (LCDs) - MAC-Specific

LCDs vary by Medicare Administrative Contractor (MAC) jurisdiction.

Common LCD Requirements:

RequirementDetails
Medical NecessitySuspicious lesion or symptom requiring tissue diagnosis
DocumentationLesion description, indication for biopsy, clinical assessment
Diagnosis CodeICD-10 code supporting biopsy (R06.00 for oral lesion, etc.)
Clinical AssessmentProvider must document clinical finding requiring biopsy

To Find Your MAC’s LCD:

  1. Go to CMS LCD Search Tool: https://www.cms.gov/cclc/lcd
  2. Enter your MAC jurisdiction
  3. Search for “biopsy, oral” or “biopsy, pharynx”
  4. Review coverage requirements

2025 REIMBURSEMENT INFORMATION

Medicare 2025 Fee Schedule

CPT 42700 - Biopsy of Palate, Uvula, Posterior Pharyngeal Wall

CategoryValue
Work RVU0.73
Practice Expense RVU (non-facility)0.54
Practice Expense RVU (facility)0.23
Malpractice RVU0.06
Total RVU (non-facility)1.33
Total RVU (facility)1.02
Conversion Factor (2025)$32.3465
National Average Fee (Non-Facility, GPCI 1.0)$43.04
Estimated Range (Non-Facility)$40 - 50
National Average Fee (Facility, GPCI 1.0)$33.01
Estimated Range (Facility)$30 - 38

Year-Over-Year Comparison (2024 vs 2025)

Metric20242025Change
Work RVU0.730.73—
PE RVU (non-facility)0.540.54—
CF$33.2875$32.3465-2.8%
National Average (Non-Facility)~$44.36~$43.04-2.8%

Commercial Insurance & Medicaid Reimbursement (2025)

Commercial Insurance:

  • Typically pays 2-3× Medicare rates
  • Estimated 42700 payment: $100 - 300 (varies by payer)
  • Usually covers biopsies with appropriate clinical indication

Medicaid:

  • Varies significantly by state
  • Estimated 42700 payment: $20 - 80 (state-dependent)
  • Most states cover biopsies when medically necessary

Self-Pay/Cash Price:

  • Typically $50 - 150

Oral/Pharyngeal Biopsy Codes

CodeDescriptionLocationRVU (Work)
42700Biopsy of palate, uvula, posterior pharyngeal wallPalate/uvula/pharynx0.73
41100Biopsy of tongue, anterior 2/3Anterior tongue0.71
41105Biopsy of tongue, posterior 1/3Posterior tongue0.74
11100Skin biopsy (punch), single lesionSkin0.32
88305Surgical pathology, gross and microscopicPathologist interpretationVariable

Note

Key Distinction: 42700 is specific to palate/uvula/posterior pharynx. Different codes used for tongue, cheek, floor of mouth biopsies.

FREQUENTLY BILLED SCENARIOS FOR 42700

Scenario 1: Suspected Oral Squamous Cell Carcinoma

Patient: 58-year-old with 3-month history of hard palate ulcer, tobacco/alcohol user

Clinical Assessment: Hard palate ulcer, 1.5cm, erythematous borders, indurated, suspicious for malignancy

Procedure: Office-based palatal biopsy

  • Local anesthesia administered
  • Punch biopsy obtained from lesion
  • Specimen fixed in formalin
  • Hemostasis achieved with cautery

Coding:

  • 42700 (palatal biopsy)
  • Diagnosis: K12.30 (oral ulcer),Z72.0 (history of tobacco use)
  • Pathology: CPT 88305 (billed separately by pathologist)

Scenario 2: Suspected Fungal Infection

Patient: 72-year-old with HIV, presenting with white patches on hard and soft palate

Clinical Assessment: Palatal white patches, erythematous base, suspicious for candidiasis or other fungal infection

Procedure: Office palatal biopsy to differentiate fungal species and rule out malignancy

  • Punch biopsy from soft palate lesion
  • Specimen fixed for fungal and bacterial culture, histology

Coding:

  • 42700 (palatal biopsy)
  • Diagnosis: B37.0 (candidiasis of mouth), B20.9 (HIV disease)

Scenario 3: E/M + Biopsy (Separate Identifiable Services)

Patient: 45-year-old with new onset dysphagia and posterior pharyngeal erythema

Office Visit:

  • History and exam for dysphagia
  • Visualization of posterior pharynx showing erythema/mass
  • Assessment and decision for biopsy

Biopsy:

  • Posterior pharyngeal wall biopsy performed
  • Tissue obtained for histology

Coding:

  • 99213-25 (E/M, separate identifiable service - dysphagia evaluation)
  • 42700 (posterior pharyngeal wall biopsy)
  • Diagnosis: R13.11 (dysphagia, oral phase), R21 (rash and other nonspecific skin eruption)

Scenario 4: Suspected Autoimmune/Bullous Disease

Patient: 38-year-old with chronicoral ulcers, mucosal blistering, suspected pemphigus vulgaris

Clinical Assessment: Multiple ulcers and erosions on hard palate and soft palate; vesicles noted

Procedure: Multiple palatal biopsies for histology and immunofluorescence studies

  • Biopsies obtained from involved soft palate and hard palate
  • Specimens fixed for routine histology and direct immunofluorescence

Coding:

  • 42700 (palatal biopsy—can bill once for procedure regardless of number of specimens from same area)
  • Diagnosis: K12.0 (recurrent oral aphthae), L10.0 (pemphigus vulgaris)

DOCUMENTATION TIPS FOR 42700

What to Document

✓ SHOULD INCLUDE:

  1. Indication for Biopsy - Suspicious lesion, palatal ulcer, mass, erythema, etc.; suspected diagnosis
  2. Lesion Description:
    • Location: Hard palate, soft palate, uvula, posterior pharyngeal wall
    • Size (mm)
    • Color and appearance
    • Surface characteristics (ulcerated, keratinized, bleeding, etc.)
    • Duration and progression
  3. Risk Factors - Tobacco use, alcohol, HPV exposure, immunosuppression
  4. Prior Assessment - Any imaging or other diagnostic findings
  5. Physical Exam Findings - Visual description of lesion, oral health status
  6. Anesthesia - Type and location of anesthesia
  7. Biopsy Technique - Punch, incisional, shave, or other
  8. Number of Specimens - Single or multiple; if multiple, locations specified
  9. Specimen Quality - Adequate for diagnosis (or note if inadequate)
  10. Hemostasis - Method used and effectiveness
  11. Intraoperative Complications - None vs. specific issues
  12. Specimen Fixative - Formalin
  13. Pathology Order - Specific studies ordered (routine histology, fungal stain, immunofluorescence, culture, etc.)
  14. Post-Operative Instructions - Diet, oral care, activity, when to expect results

✗ SHOULD AVOID:

  • Vague lesion description (“lesion on palate” without details)
  • Missing location specificity
  • No documented clinical indication
  • Incomplete lesion assessment (size, color, borders)
  • Copy-paste documentation

Sample Documentation Template

BIOPSY REPORT - Palatal/Pharyngeal Biopsy (42700)

PATIENT: [Name]
DATE: [Date]
PROVIDER: [Name, Credentials]
LOCATION: Office / Hospital / ASC

INDICATION:
Patient is a [age]-year-old presenting with [chief complaint: ulcer, mass, erythema, etc.] on the [hard palate / soft palate / uvula / posterior pharynx] for [duration]. Lesion concerning for [suspected diagnosis: malignancy, infection, inflammatory disease]. Biopsy obtained for tissue diagnosis.

HISTORY:

  • Duration: [X] weeks/months
  • Symptoms: [Pain, bleeding, difficulty swallowing, other]
  • Prior treatment: [None / topical treatment / other]
  • Risk factors: [Tobacco use, alcohol, HPV exposure, immunosuppression, other]
  • Associated symptoms: [Constitutional, lymphadenopathy, other]

PHYSICAL EXAMINATION:

  • Lesion Location: [Specify: hard palate, soft palate, uvula, posterior pharynx]
  • Size: [X] mm
  • Color: [Erythematous, white, ulcerated, etc.]
  • Surface: [Ulcerated, keratinized, bleeding, granular, other]
  • Borders: [Well-defined, irregular, indurated, other]
  • Associated Findings: [Lymphadenopathy, other lesions, etc.]

PROCEDURE: Anesthesia: [Topical / local infiltration / general]
Lesion visualized and examined. [Punch biopsy / Incisional biopsy / Shave biopsy] obtained from [specific site].

[If multiple specimens: Additional specimens obtained from [locations].]

Specimen placed in formalin fixative. Hemostasis achieved with [cautery / pressure / topical hemostatic agent / sutures / self-limited].

SPECIMEN:

  • Quality: Adequate for diagnosis
  • Number: Single or [X] specimens
  • Location(s): [Specify]
  • Fixative: 10% neutral buffered formalin
  • Special studies ordered: [Routine histology / fungal stain / bacterial culture / immunofluorescence / other]

COMPLICATIONS: None

ASSESSMENT:
Biopsy of [palate/uvula/pharynx] for [suspected diagnosis]. Tissue obtained and submitted for histopathologic examination.

PLAN:

  • Pathology results: Expected [timeframe]
  • Patient to call for results
  • Return if bleeding, fever, difficulty swallowing

AUDIT DEFENSE CHECKLIST FOR 42700

Before billing 42700, verify:

  • Medical necessity documented - Clinical indication for biopsy clearly stated
  • Lesion described - Location, size (mm), color, appearance documented
  • Risk factors documented - Tobacco, alcohol, immunosuppression, etc., if relevant
  • Anesthesia documented - Type used
  • Biopsy technique documented - Punch, incisional, or shave biopsy specified
  • Specimen quality noted - Adequate for diagnosis
  • Hemostasis documented - Method used and result
  • Intraoperative complications documented - Or note “none”
  • Pathology order documented - Specific studies ordered (histology, culture, immunofluorescence, etc.)
  • E/M + 42700 properly coded - If E/M performed same day, E/M coded with -25 modifier
  • Diagnosis code supports indication - ICD-10 shows lesion or symptom requiring biopsy
  • Specimen fixative documented - Formalin specified

RED FLAGS FOR AUDITORS

42700 claims are at audit risk if:

  • ❌ Medical necessity not documented (no clinical indication stated)
  • ❌ Lesion not described (vague or missing description)
  • ❌ Location not specified (just “palatal biopsy” without detail)
  • ❌ Size not documented (especially important for lesions)
  • ❌ Biopsy technique not specified (punch vs. incisional?)
  • ❌ No documentation of specimen quality
  • ❌ Hemostasis not documented
  • ❌ E/M + 42700 billed without -25 modifier on E/M
  • ❌ Documentation appears copy-pasted
  • ❌ Diagnosis code unrelated to biopsy indication

FREQUENTLY ASKED QUESTIONS (FAQs)

Q: Can I bill 42700 + E/M same day?
A: Yes. Bill E/M with modifier -25 (separate identifiable service) + 42700. E/M must be separately identifiable from the biopsy.

Q: What’s the difference between 42700 and tongue biopsy codes?
A: 42700 is specific to palate, uvula, posterior pharynx. Tongue biopsies use CPT 41100 (anterior 2/3) or 41105 (posterior 1/3).

Q: Should I bill for pathology interpretation?
A: No. Pathology interpretation is billed separately by the pathologist using CPT 88305 or higher. You bill only for the biopsy collection (42700).

Q: How do I code if I obtain multiple biopsies from different locations?
A: Bill 42700 once. If biopsies from different anatomic sites (e.g., palate AND pharynx), you might use modifier -59 to indicate distinct sites, but verify your payer’s policy.

Q: Can I bill 42700 in the OR?
A: Yes. The code can be billed in office, OR, ASC, or ED. Reimbursement differs based on facility type.

Q: What if biopsy specimen is inadequate?
A: Document that specimen was inadequate. You can still bill 42700 for the attempt. If repeat biopsy performed, use modifier -76 (repeat by same physician) or -77 (repeat by different physician).

REAL-WORLD BILLING TIPS

Tips to Maximize Compliance & Revenue

  1. Document clear indication - Specific clinical finding or suspected diagnosis
  2. Describe lesion thoroughly - Location, size (mm), color, appearance, borders
  3. Use -25 modifier with E/M - When both services performed same day
  4. Verify pathology billing - Pathologist bills separately for interpretation
  5. Document specimen quality - Note if adequate for diagnosis
  6. Keep notes specific - Avoid copy-paste; describe actual lesion observed
  7. Document hemostasis method - Important for post-op care communication
  8. Include follow-up plan - When patient will receive results, when to return
  9. Document special studies - If cultures, stains, or immunofluorescence ordered
  10. Bill in correct setting - Office (11) vs. facility (22/24); affects PE RVU payment

BILLING & CODING RESOURCES

Recommended Resources:

SUMMARY TABLE

ElementDetails
Official DefinitionBiopsy of palate, uvula, and/or posterior pharyngeal wall
Global Period000 days (no bundled post-op)
Work RVU (2025)0.73
Total RVU (2025, Non-Facility)1.33
Medicare Payment (2025, Non-Facility)~$43
Medicare Payment (2025, Facility)~$33
Typical Time5-15 minutes
Provider RequiredENT, oral surgeon, qualified dentist
Common Modifiers-25 (separate E/M), -59 (distinct sites)
Typical UseOral lesion diagnosis (malignancy, infection, inflammatory)
Common MistakesMissing indication; vague lesion description; E/M billed without -25
Audit RiskLow (straightforward procedure, minimal documentation required)
BundlingDoes not bundle with pathology interpretation (separate bill)
Telehealth AllowedNo (requires in-person tissue collection)

Document Created: February 2026
Compliant with: 2025 Medicare Physician Fee Schedule, CMS National and Local Coverage Determinations
Last Updated: February 2026

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