Alopecia (capitis) totalis

This code represents a severe autoimmune condition characterized by complete hair loss across the entire scalp. It is a specific form of alopecia areata where all hair on the head, including eyebrows and eyelashes, is lost. The condition results from the immune system mistakenly attacking hair follicles.

Use this code when documentation explicitly states "alopecia totalis" or describes complete hair loss of the scalp. This diagnosis is typically made by a dermatologist based on clinical examination. Supporting documentation should clearly indicate the extent of hair loss is total on the head.

• Differentiate from alopecia universalis (L63.1), which involves complete hair loss over the entire body.
• Do not use for general alopecia areata (L63.9) unless total scalp involvement is specified.
• Ensure the medical record clearly distinguishes between partial and total scalp hair loss.