ICD-10 Code L65.9 – Nonscarring hair loss, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L65.9 – Nonscarring hair loss, unspecified
What it is
L65.9 identifies hair loss that does not destroy the hair follicle and is not further specified in the record. Use it when the documentation says nonscarring alopecia or hair loss, but gives no more precise type.
Clinical signs
Clinical features vary; refer to documentation. Commonly, you may see diffuse thinning, patchy loss, or increased shedding without signs of permanent scarring or follicle loss.
When to use this code
Use this code when the provider documents nonscarring hair loss and does not name a more specific diagnosis. It also fits cases where the record only states alopecia or hair loss without additional detail. If the cause or subtype is specified, code that condition instead.
Do not use for
Do not use L65.9 for scarring alopecia or hair loss with documented follicular destruction. Check documentation if the note identifies a specific subtype, such as alopecia areata or telogen effluvium.
Coding tip
Query for the exact type of alopecia when the note is vague, because a more specific code may be available.