Dermatology Billing Services

Dermatology visits often mix several services in one short appointment. A patient may come in for a rash, then have a biopsy and freeze a few lesions on the same day. Each step needs its own code, its own diagnosis link, and a note that stands on its own. Lesion counts, sizes, and body sites drive the code choice.

Medical and cosmetic care also sit side by side in many dermatology practices. Cosmetic work is usually paid by the patient, while medical care goes through insurance. Mixing them up leads to denials. Westmont Revenue Partners connects dermatology practices with vetted billing experts who understand dermatology billing and the detail it demands.

Who this is for

• General dermatologists in private practice
• Medical and surgical dermatology groups
• Practices that perform Mohs surgery
• Practices with an in-house dermatopathology lab
• Mixed medical and cosmetic practices
• Nurse practitioners and physician assistants in dermatology

What gets billed

• New and established patient visits
• Skin biopsies by shave or punch
• Destruction of precancerous lesions
• Destruction of benign lesions such as warts
• Excision of benign skin lesions
• Incision and drainage of abscesses
• Photodynamic therapy
• Mohs micrographic surgery
• Dermatopathology reading, where done in-house
• Same-day visits with procedures

Commonly billed codes

Code	Type	What it covers
11102	CPT	Shave-style biopsy of one skin lesion
11104	CPT	Punch biopsy of one skin lesion
17000	CPT	Destroying the first precancerous skin lesion
17003	CPT	Destroying each additional precancerous lesion, 2 to 14
17110	CPT	Destroying up to 14 benign lesions such as warts
11400	CPT	Excising a small benign skin lesion
10060	CPT	Draining a skin abscess
96567	CPT	Photodynamic therapy for skin lesions
17311	CPT	First stage of Mohs surgery on certain sites
L57.0	ICD-10-CM	Actinic keratosis
L40.0	ICD-10-CM	Psoriasis vulgaris
L20.9	ICD-10-CM	Atopic dermatitis, unspecified

Note

Codes are examples for orientation, not a complete list, and do not guarantee coverage or payment. Always check current code sets and payer policy.

Billing challenges in dermatology

Counting lesions. Destruction codes depend on how many lesions were treated and whether they are benign or premalignant. A biller checks the note for counts and sites so the right code is used.

Same-day visit and procedure. An office visit on the day of a biopsy or destruction may need a modifier and a separate note. Experienced billers know when payers will accept both and when they bundle.

Medical versus cosmetic. Insurance pays for medically necessary care only. A biller reviews diagnoses so cosmetic services are not sent to insurance by mistake.

Excision size and margins. Excision codes depend on the lesion size plus margins, and pathology may change the final code. A biller waits for the path report where the payer requires it.

Multiple biopsies. Several biopsies in one visit can have special reporting rules. A biller follows current coding guidance and payer rules for repeat codes and modifiers.

Mohs staging. Mohs billing depends on stages, tissue blocks, and who reads the slides. A biller matches the operative note to each stage so the claim is complete.

Biologic and topical drug authorization. Many dermatology drugs need prior authorization or step therapy. A biller tracks renewal dates so treatment is not interrupted by a lapsed approval.

How Westmont can help

• Matching you with vetted billing experts experienced in dermatology
• End-to-end revenue cycle support for medical, surgical, and Mohs claims
• Denial management for bundling and medical necessity issues
• Credentialing support for new providers and payer enrollment
• Clear reporting by procedure type and payer

Frequently asked questions

How do I bill a skin biopsy and an office visit on the same day?

Many payers allow both when the visit covers a separate problem or significant extra work beyond the decision to biopsy. A modifier is often needed, and the note must support it. Without that, the visit may be bundled into the procedure. A biller reviews documentation and payer policy before adding a modifier.

What is the difference between destroying premalignant and benign lesions?

Premalignant lesions, such as actinic keratoses, have their own destruction codes billed by count. Benign lesions, such as warts, use a different code set. Payers look for the right diagnosis with each. The chart should list lesion type, number, and site so the claim matches what was done.

Can dermatology billing include cosmetic services?

Cosmetic services are usually paid by the patient, not insurance. Medical services go to the payer. A practice should keep the two clearly separate in its records and fee schedules. A billing expert can help set up workflows so cosmetic visits are not sent as insurance claims.

Why are dermatology claims denied for medical necessity?

Common causes include a diagnosis that does not support the procedure, missing documentation, or a service the payer treats as cosmetic. Some payers also limit frequency on certain treatments. A biller compares chart notes and diagnoses against payer policy before the claim goes out.

Is outsourcing dermatology billing worth considering?

Many practices look at it when procedure volume rises or when claims need constant follow-up. Westmont does not submit claims itself. We connect you with vetted billing experts, and you decide whether a match works for you.

Related billing services

• Mohs Surgery Billing
• Plastic Surgery Billing
• Pathology Billing
• Allergy and Immunology Billing
• Ambulatory Billing