Dermatology BillingComplete Coding & Revenue Guide (2026)Top CPT codes with current RVU data, denial patterns, modifier rules, bundling pitfalls, and revenue opportunities for dermatology practices.
Top CPT Codes
The highest-value dermatology CPT codes with current RVU data and Medicare payment from the CY 2026 Physician Fee Schedule. Click any code for the full payment, bundling, and modifier guide.
Most practices under-capture revenue on these codes through downcoding, missed modifier 25, stale fee schedules, or misapplied bundling. Our coders audit every line against the documentation before submission so the revenue earned actually gets billed.
Bundling Pitfalls
6 trapsThe code pairs that trigger NCCI edits and CO-97 denials in dermatology. Know these before billing.
11102: 11103: 11102 is first biopsy, 11103 is each additional. NEVER bill 11103 without 11102. Count: 3 biopsies = 11102 + 11103 + 11103.
11102: 11106: Tangential (11102) and incisional (11106) biopsy on same date: bill the appropriate technique for each site. Different techniques at different sites are separately billable.
17000: 17003: 17000 is first premalignant lesion, 17003 is 2nd-14th, 17004 is 15+. Example: 8 lesions = 17000 + 17003x7. 20 lesions = 17000 + 17003x13 + 17004.
17110: 17111: 17110 is first 14 benign lesions, 17111 is each additional 15. Example: 30 lesions = 17110 + 17111.
11102: 11600: Biopsy + excision at SAME site: if biopsy is taken and then excised in same session, bill only the excision. Biopsy is included.
11602: 12032: Excision + intermediate closure: excision code includes simple closure. If intermediate or complex closure is needed, bill repair code separately.
CO-97 bundling denials are recoverable with correct modifier documentation. Most billers write them off. We work each one against the clinical record and resubmit with the right modifier 25 or 59 path.
Modifier Guidance
When to apply each modifier in dermatology claims. Wrong modifier application is the top single-line denial trigger and a leading audit target.
E/M with biopsy/destruction: if an E/M is separately identifiable (evaluated lesion AND a separate problem), add modifier 25. Don't use 25 if the only reason for the visit is the biopsy.
Decision for surgery — E/M where the decision to perform a major surgery (90-day global) is made. Common with melanoma diagnosis leading to wide local excision.
Staged procedure — Mohs surgery followed by reconstruction at a later date during the global period. Bill reconstruction with modifier 58.
Repeat procedure — same day, same physician. Uncommon in derm but used for re-excision with positive margins.
Required for additional biopsy sites. If doing 3 biopsies at 3 sites: 11102 + 11103-59 + 11103-59. Each must have a different anatomic location documented.
Revenue Opportunities
6 playsThe billing codes and services most dermatology practices under-capture. Each one is a recurring revenue lift, not a one-time fix.
Biopsy code selection: 2021 biopsy code changes created 3 types — tangential (11102/11103), punch (11104/11105), incisional (11106/11107). Punch biopsy pays $20-30 MORE than tangential. Select the correct type based on technique used.
Destruction code stacking: 17000 (first premalignant) + 17003 (each 2-14) + 17004 (15+). A patient with 25 actinic keratoses = 17000 + 17003x13 + 17004 = $250-350.
Closure code optimization: Simple closure is included in the excision code. But intermediate closure (12031-12057) and complex closure (13100-13160) are separately billable. Many practices miss the repair code.
Mohs add-on stages: Each additional Mohs stage adds $120-180. Proper documentation ensures every stage is billable. Average Mohs case = 1.8 stages.
E/M with multiple procedures: When a patient presents for a skin check AND has procedures, bill E/M (99213-25) + procedure codes. The skin check itself is a separately identifiable E/M.
Phototherapy (96910-96913): Each session is separately billable. NB-UVB (96912) pays more than targeted (96910). Documenting body surface area treated determines code selection.
Documentation Checklist
What the chart must contain to support billing. Missing documentation means audit vulnerability.
- Biopsy: Document lesion description (size, shape, color, borders), anatomic location (specific — 'left forearm, 5cm distal to antecubital fossa'), indication (why biopsied), and technique used (shave/punch/incisional).
- Excision: Document pre-excision lesion size in cm, excision margins, wound dimensions (length x width before closure), closure type (simple/intermediate/complex), and pathology requisition.
- Destruction: Document number of lesions, size of each, location of each, method of destruction (cryotherapy/electrodesiccation/laser), and indication (pre-malignant vs benign).
- Mohs: Document each stage: tissue excised, mapping, histologic exam findings, positive margins requiring additional stage. Final stage must document clear margins.
Coding Workflow
Step by step approach for coding dermatology encounters correctly.
1. Count and document all lesions by type (pre-malignant vs benign vs suspicious). 2. Select biopsy technique code (tangential/punch/incisional). 3. For destructions: count lesions, select 17000/17003/17004 (premalignant) or 17110/17111 (benign). 4. For excisions: measure excised specimen size (not lesion size), select code by size and location. 5. Add closure code if intermediate or complex. 6. Apply modifier 59/XS for different anatomic sites. 7. If separate E/M performed, add modifier 25. 8. Match ICD-10: use D-codes for neoplasm uncertain behavior, L-codes for benign conditions, Z-codes for screening.
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Everything about Dermatology billing
What CPT codes does Dermatology bill most often?
Top Dermatology codes include 11102 (Tangntl bx skin single les); 11103 (Tangntl bx skin ea sep/addl); 11104 (Punch bx skin single lesion); 11105 (Punch bx skin ea sep/addl); 11106 (Incal bx skn single les).
What are the most common denials in Dermatology billing?
Dermatology denials concentrate around medical necessity, bundling, prior authorization, and modifier errors.
Does Go Medical Billing handle Dermatology?
Yes. Go Medical Billing handles Dermatology billing with AAPC-certified coders, payer-specific scrub rules, and dedicated account management. Starting at 2.49 percent of collections with no setup fees.
Specialty content reviewed by AAPC-certified coders. CPT codes and descriptions are copyright of the AMA. Medicare payment varies by locality. Commercial rates vary by contract.
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