ICD-10 Code F63.3 – Trichotillomania (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F63.3 – Trichotillomania
What it is
F63.3 identifies trichotillomania, a disorder marked by recurrent hair pulling that causes hair loss or thinning. Use it when the behavior is intentional but difficult to control and not better explained by another condition.
Clinical signs
Typical findings include visible hair loss, broken hairs, and repeated pulling from the scalp, eyebrows, eyelashes, or other body areas. Clinical features vary; refer to documentation for associated distress, attempts to stop, or functional impairment.
When to use this code
Use F63.3 when the record clearly documents trichotillomania as the diagnosis, not just hair loss. It may apply in outpatient, behavioral health, or primary care notes when the provider links the hair-pulling behavior to the disorder. Check documentation if the cause of alopecia is unclear.
Do not use for
Do not use this code for nonspecific hair loss, traction alopecia, or hair breakage from cosmetic practices unless trichotillomania is documented. Do not assign it when the behavior is absent or another condition explains the finding.
Coding tip
Confirm that the provider documents trichotillomania by name or describes compulsive hair pulling before assigning F63.3.