ICD-10 Code L65.0 – Telogen effluvium (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L65.0 – Telogen effluvium
What it is
Telogen effluvium is a diffuse, non-scarring hair shedding disorder. It usually reflects a shift of hair follicles into the resting phase, leading to increased daily hair loss.
Clinical signs
Typical findings include generalized thinning and noticeable shedding rather than patchy bald spots. Clinical features vary; refer to documentation.
When to use this code
Use L65.0 when the record specifically documents telogen effluvium or diffuse shedding consistent with that diagnosis. You may also use it when the clinician identifies it as the cause of hair loss after evaluation. If the note only says “hair loss,” check documentation before coding.
Do not use for
Do not use this code for scarring alopecia, patterned hair loss, or other clearly named alopecias. If the cause is different or unspecified, check documentation.
Coding tip
Code the documented diagnosis, not the symptom of hair loss alone.