ICD-10 Code L66.81 – Central centrifugal cicatricial alopecia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L66.81 – Central centrifugal cicatricial alopecia
What it is
Central centrifugal cicatricial alopecia is a scarring hair-loss disorder that usually begins at the crown and spreads outward. The code identifies this specific diagnosis when documented by the clinician.
Clinical signs
Typical findings include gradual thinning over the central scalp, broken hairs, and shiny or scarred skin where follicles are lost. Clinical features vary; refer to documentation.
When to use this code
Use L66.81 when the record clearly states central centrifugal cicatricial alopecia or ccc alopecia. It is appropriate for confirmed scarring alopecia affecting the central scalp, especially when the diagnosis is made by dermatology or documented in the assessment. Check documentation if the note only says alopecia without type.
Do not use for
Do not use this code for nonscarring hair loss, traction alopecia, or hair thinning without a documented scarring pattern. If the cause or type is unclear, check documentation.
Coding tip
Code the condition only when the provider documents the specific scarring alopecia diagnosis, not just “hair loss.”