ICD-10 Code L63.0 – Alopecia (capitis) totalis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L63.0 – Alopecia (capitis) totalis
What it is
L63.0 identifies alopecia totalis, a form of hair loss involving complete or near-complete loss of scalp hair. Use it when documentation clearly states total scalp alopecia.
Clinical signs
Typical findings include smooth, non-scarring loss of scalp hair and absence of visible follicular damage. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents alopecia totalis, total scalp baldness, or complete loss of scalp hair. It may also fit follow-up visits when the diagnosis remains active and is still being evaluated. Check documentation if the note only says “alopecia” without specifying extent.
Do not use for
Do not use L63.0 for patchy alopecia areata, diffuse hair thinning, or scarring hair loss. If the record does not confirm total scalp involvement, check documentation.
Coding tip
Code the most specific hair-loss diagnosis documented; “alopecia” alone is not enough for L63.0.