Alopecia areata

Definition

A microscopically inflammatory, usually reversible, patchy hair loss occurring in sharply defined areas and usually involving the beard or scalp

4 subordinate codes

• ED70.20Patchy alopecia areata of scalp
• ED70.21Alopecia totalis
• 4B4YOther specified diseases of the immune system
• 4B4ZDiseases of the immune system, unspecified

Nearby in Alopecia or hair loss

• ED70.0Male pattern hair loss
• ED70.1Female pattern hair loss
• ED70.3Telogen effluvium
• ED70.4Anagen effluvium
• ED70.5Scarring alopecia
• 4B4YOther specified diseases of the immune system
• 4B4ZDiseases of the immune system, unspecified