ICD-10 Code L63.1 – Alopecia Universalis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L63.1 – Alopecia universalis
What it is
L63.1 identifies alopecia universalis, a severe form of hair loss with complete or near-complete loss of scalp and body hair. It reflects a non-scarring alopecia, so the skin usually remains intact.
Clinical signs
Typical findings include total absence of scalp hair and loss of eyebrows, eyelashes, and other body hair. Clinical features vary; refer to documentation if the record does not clearly describe the extent of hair loss.
When to use this code
Use L63.1 when the provider documents alopecia universalis or clearly describes complete body-wide hair loss consistent with that diagnosis. Code it when the condition is confirmed in the assessment or problem list, not when hair loss is only suspected. If the note only says alopecia, check documentation for the specific type.
Do not use for
Do not use this code for patchy alopecia areata, androgenic alopecia, or scarring hair loss disorders. If the documentation does not specify universalis, check documentation before assigning L63.1.
Coding tip
Confirm that the record states “universalis” or clearly indicates total hair loss before coding L63.1.