Skin tags are a routine finding in clinical settings, yet they remain one of the more mishandled conditions when it comes to medical billing. From selecting the right diagnosis code to justifying removal as medically necessary, even seasoned coders occasionally stumble. If your practice has been dealing with denied claims or uncertain code selection, this guide is designed to clear the confusion around the ICD-10 code for skin tags and help you build a more accurate, defensible billing process.

What Makes Skin Tag Coding Tricky?

Medically referred to as acrochordons, skin tags are soft, benign growths that form where skin experiences repeated friction. You will most often find them on the neck, underarms, inner thighs, eyelids, and perianal area. On their own, they pose no health risk — but they can bleed, chafe, or become chronically irritated, at which point treatment becomes clinically justified rather than purely elective.

That distinction — medically necessary versus cosmetic — sits at the heart of nearly every billing dispute involving skin tags. Get the documentation and code selection right, and reimbursement follows smoothly. Miss either one, and you are looking at delays, denials, or compliance exposure.

The Primary ICD-10 Code for Skin Tags

When providers and coders search for the correct code for this condition, one code comes up consistently:

L91.8 – Other Hypertrophic Disorders of the Skin

This is the principal, fully billable ICD-10 code for skin tags. It is recognized across the vast majority of payer systems and applies to a wide clinical spectrum — from mildly bothersome tags to those that are actively bleeding or causing functional discomfort.

L91.8 is the appropriate choice when:

• The skin tag is located on common body surfaces such as the neck, torso, or axillae
• The patient reports documented symptoms including friction pain, irritation, or bleeding
• The clinical record supports medical necessity for evaluation or removal

Other Billable Codes Worth Knowing

While L91.8 covers most presentations, there are situations where alternative codes better reflect the clinical picture:

L98.8 – Other Specified Disorders of the Skin and Subcutaneous Tissue When a skin tag has become inflamed or developed a secondary infection, L98.8 is more precise. This code demands solid symptom documentation — do not use it unless the record clearly reflects an inflammatory or infectious process.

D23.9 – Benign Neoplasm of Skin, Unspecified Some payers and providers classify skin tags as benign skin neoplasms, particularly when they appear on the face or eyelids. D23.9 serves that purpose and may be required depending on how the lesion is described in the clinical note.

ICD-10 Code for Anal Skin Tags: A Location-Specific Code

The perianal region requires its own coding approach. The correct ICD-10 code for anal skin tags is:

K64.4 – Residual Hemorrhoidal Skin Tags

This code applies specifically to skin tags around the anal opening, which are commonly left behind following hemorrhoid treatment or associated with chronic hemorrhoidal disease. Because of their anatomical location and clinical context, these lesions are categorized under digestive system disorders rather than general skin conditions.

Using L91.8 in place of K64.4 for a perianal skin tag is a coding error that can trigger claim scrutiny or outright rejection. If the tag is located at or near the anus and has any association with hemorrhoids, K64.4 is the code to use — and the clinical note should reflect that context clearly.

ICD-10 Code for Skin Tag Removal: Clearing Up a Common Misconception

One of the most frequently searched phrases in dermatology billing is the “ICD-10 code for skin tag removal.” This is worth addressing directly:

ICD-10 codes identify the diagnosis. They do not describe procedures.

Skin tag removal is captured using CPT codes, not ICD-10 codes. The relevant procedure codes are:

• CPT 11200 – Removal of skin tags, up to 15 lesions
• CPT 11201 – Each additional 10 lesions beyond the first 15

These CPT codes must always be submitted alongside a supporting ICD-10 diagnosis code — typically L91.8 — to establish why the removal was performed. A procedure code submitted without a matching diagnosis code that demonstrates medical necessity will not be reimbursed by most commercial payers or Medicare.

Medical Necessity: Where Claims Are Won or Lost

Insurance coverage for skin tag removal is not automatic. Payers draw a clear line between procedures that are clinically indicated and those that are cosmetic in nature.

Removal is generally considered medically necessary when:

• The tag bleeds recurrently due to friction from clothing or movement
• The patient reports ongoing pain, discomfort, or skin irritation
• There is documented interference with daily activities or hygiene
• Signs of infection or chronic inflammation are present

Removal is generally not covered when:

• The patient’s only concern is the appearance of the tag
• There are no symptoms mentioned in the clinical note
• The documentation uses vague or non-specific language

A clinical note that simply reads “patient desires removal” will not satisfy medical necessity requirements. The record must connect the patient’s symptoms to a clinical rationale for treatment.

Documentation Elements That Protect Your Claims

Every skin tag encounter submitted for reimbursement should include the following in the clinical record:

• Total number of lesions examined and treated
• Precise anatomical location of each tag
• Specific symptoms reported by the patient, with enough detail to establish impact
• Removal method used, whether excision, cryotherapy, ligation, or electrosurgery
• A clear statement of medical necessity grounded in the patient’s presentation

Incomplete documentation is the single most common reason that technically correct codes still result in denied claims.

Coding Mistakes That Lead to Denials

Applying L91.8 to an asymptomatic, cosmetic case: Without supporting symptoms in the record, this code will not justify reimbursement regardless of how it is submitted.

Substituting general lesion codes: Codes for cysts, scars, or warts are not appropriate for skin tags and will be flagged as mismatches.

Skipping K64.4 for perianal tags: Using a generic skin code for an anal skin tag ignores a more specific and accurate code, which can raise audit concerns.

Failing to link CPT and ICD-10 codes logically: The procedure performed must make sense in the context of the diagnosis submitted. Disconnects between the two are a frequent cause of rejection.

Putting It All Together

Accurate use of the ICD-10 code for skin tags removal starts with code selection — L91.8 for most presentations, K64.4 for anal skin tags, and L98.8 or D23.9 when the clinical picture calls for it. From there, the CPT codes for skin tag removal must be matched to the right diagnosis, and the clinical documentation must do the work of justifying every claim you submit.

Billing for skin tags is not inherently complicated, but it does require precision. A well-documented encounter with the right code combination processes cleanly, pays promptly, and holds up under review. That is the standard every practice should be working toward.