ICD-10 Code L66.8 – Other cicatricial alopecia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L66.8 – Other cicatricial alopecia
What it is
L66.8 identifies other forms of scarring hair loss not specifically named elsewhere in ICD-10-CM. Use it when documentation describes cicatricial alopecia, but the exact subtype is not coded more specifically.
Clinical signs
Typical findings include permanent hair loss with scalp scarring, loss of follicular openings, and possible inflammation or skin change. Clinical features vary; refer to documentation.
When to use this code
Use this code when the clinician documents cicatricial alopecia and does not name a more specific diagnosis. It also fits cases where the record states scarring alopecia, but the cause or subtype is unclear. Check documentation for laterality or a more specific hair-loss diagnosis.
Do not use for
Do not use L66.8 for non-scarring hair loss, such as alopecia areata or androgenic alopecia. If the chart identifies a more specific cicatricial alopecia type, code that instead.
Coding tip
Look for the exact alopecia subtype in the assessment, because ICD-10-CM has more specific cicatricial alopecia codes.