Collapsed Lesion Counts
Multiple destructions billed as one because nobody logged the number treated.
The fixRecord lesion count on the procedure form at the time of service, not from memory afterwards.
Medical and cosmetic separated cleanly, every visit
Dermatology bills more procedures per visit than almost any specialty, and the lost revenue sits in lesion counts, pathology handling, and the line between medical and cosmetic work. We build charge capture around your procedure log so every biopsy, destruction, and repair reaches a claim, and patients hear what is covered before the appointment.
Dermatology medical billing covers skin, hair, and nail care from routine checks through surgical treatment. It includes lesion biopsies and destructions, excisions and repairs, Mohs surgery, phototherapy, and injectable treatments.
The volume is what makes it distinct. A single visit can generate an office charge plus four or five separate procedures, each needing its own site, size, and method recorded. Miss one detail and the whole line either downcodes or drops.
The other pressure is the coverage line. Much of dermatology sits close to cosmetic treatment, and payers draw that boundary tightly. Getting it right protects both your collections and your patient relationships, because surprise bills in this specialty are especially damaging.
The money is in the specifics: how many, how big, and by what method.
Destructions and biopsies are billed by number treated. Record each one at the time, or the count collapses to a single charge.
Excision codes depend on lesion diameter plus margins, measured before removal. Measuring afterwards understates the work.
The same procedure can be covered or excluded depending on indication. Document the medical reason or expect a denial.
Specimens read in house bill differently from those sent out, and billing for work you did not perform is a compliance risk.
Each one has a fix your team can apply this week.
Multiple destructions billed as one because nobody logged the number treated.
The fixRecord lesion count on the procedure form at the time of service, not from memory afterwards.
Lesion diameter recorded after removal, which understates the code and the payment.
The fixMeasure and document the lesion plus planned margins before you cut.
Covered procedures denied because the note never stated the medical indication.
The fixState the symptom or clinical concern in the note, and collect cosmetic fees up front.
Charges submitted for specimen reading that an outside laboratory actually performed.
The fixConfigure per-specimen rules once, based on who reads what, then apply them automatically.
Closures performed after excision are documented clinically but omitted from the claim.
The fixReconcile every excision against a matching repair line before claims transmit.
Additional stages and blocks performed during surgery are not carried onto the claim.
The fixCapture stage and block counts directly from the operative record each day.
Built around the procedure log, where the revenue actually lives.
We verify benefits and flag likely cosmetic exclusions so patients hear the cost before treatment.
Every biopsy, destruction, and excision on the day's log is matched against submitted charges.
Coders use recorded lesion size, site, and method rather than inferring from the diagnosis.
Specimen charges follow who actually performed the reading, set per site during onboarding.
Claims pass edits for lesion counts, repair pairings, and bundling before they go out.
Denials are worked by cause, with monthly reporting split by medical, surgical, and cosmetic revenue.
Pathology, cosmetic separation, and Mohs handled in-house.
A general map of the dermatology code landscape.
| Range | What It Covers |
|---|---|
| 11102–11107 | Skin biopsy by technique |
| 11400–11646 | Excision of benign and malignant lesions by size |
| 17000–17286 | Destruction of premalignant and benign lesions |
| 17311–17315 | Mohs micrographic surgery by stage and block |
| 12001–14302 | Wound repair and adjacent tissue transfer |
| 96900–96922 | Phototherapy and photochemotherapy |
| Group | Clinical Focus |
|---|---|
| C43–C44 | Melanoma and other skin malignancies |
| D22–D23 | Benign melanocytic and skin neoplasms |
| L20–L30 | Dermatitis and eczema |
| L40–L45 | Psoriasis and related papulosquamous disorders |
| L70 | Acne and related conditions |
| L57 | Actinic keratosis and sun damage changes |
Note: This is general education on how dermatology coding is organised. Code sets and payer policies change often. Always check the current code set and the payer's active policy for the date of service.
We work inside the system your practice already uses.
Practical solutions for dermatology practices.
Log the count at the time of treatment. Destruction and biopsy codes are billed by number treated, so a visit where twelve lesions were frozen must show twelve. Add a required count field to your procedure form. We reconcile that log against submitted charges, so a documented count always reaches the claim.
Decide before the patient sits down, not after the denial. If the procedure is cosmetic, collect the fee up front with a signed acknowledgement. If it is medical, make sure the note states the symptom or clinical concern driving it. We flag likely cosmetic exclusions during verification so your front desk has the conversation early, which protects collections and prevents angry statements.
Almost always because the lesion was measured after removal. Excision codes depend on the lesion diameter plus the margins you planned, and tissue shrinks once excised. Measure and record both before cutting. That single habit change moves excisions into the correct size band and is usually the fastest revenue improvement available to a dermatology practice.
No. Bill only for work your practice actually performs. If an outside laboratory reads the specimen, that laboratory bills the reading. If you have an in-house dermatopathologist, you bill it. Mixing these creates both denials and compliance exposure. We configure the rule per specimen type during onboarding so it is applied automatically rather than judged case by case.
An automated pairing check. Closures beyond a simple repair are separately billable, and they are among the most commonly dropped charges in dermatology. We scan every excision claim for a matching repair line and hold anything that looks incomplete. Your team gets a short daily list to confirm rather than a monthly reconciliation nobody has time to finish.
Record stages and blocks as you go, directly in the operative note. Payment depends on how many stages were taken and how many tissue blocks were examined at each. Reconstructing this afterwards reliably undercounts it. We pull these figures from the operative record daily, which stops the most valuable procedure in dermatology from being systematically underbilled.
Usually billing a biopsy alongside a procedure that already includes it. When a lesion is removed in the same session, the removal often incorporates the sampling. Adding a separate biopsy line then triggers an edit. The solution is resolving this at coding rather than after denial. We check these pairings before submission, which removes the category almost entirely.
Give a written estimate before treatment for anything that might not be covered. Dermatology sits close to the cosmetic boundary, so patients are frequently surprised. We verify benefits ahead of the visit and identify likely exclusions, so your staff can present an estimate at scheduling. Practices that do this consistently see both fewer complaints and better point-of-service collection.
Yes, and it is often missed in busy clinics. Each treatment session is a billable service when the diagnosis supports it and the session is documented. Practices running phototherapy as a nurse-managed service sometimes never charge for it at all. We reconcile the treatment schedule against claims weekly so recurring sessions do not quietly go uncollected.
Fix charge capture before chasing denials. In dermatology the largest losses are charges never submitted, not claims wrongly denied. Start with lesion counts, repairs after excisions, and Mohs stages. We audit these three against your clinical records and typically find recoverable revenue in the first month, without any change to how your physicians practise.
We audit lesion counts, repairs, and Mohs stages against your clinical records and show you the annual gap in plain numbers.
Submit your details and our AAPC-certified billing auditors will coordinate a free operational audit for your clinic.
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