Acne keloid

This code represents acne keloidalis nuchae (AKN), a chronic inflammatory condition characterized by follicular papules and pustules that coalesce into keloidal plaques on the occipital scalp and posterior neck. It is a form of scarring alopecia, often leading to permanent hair loss in affected areas.

Use this code when documentation clearly indicates a diagnosis of acne keloidalis nuchae. This typically involves a clinical assessment noting characteristic lesions, scarring, and hair loss in the nuchal region. It is appropriate for both initial diagnoses and follow-up encounters for this specific condition.

• Differentiate from other forms of acne (e.g., acne vulgaris, cystic acne) or other keloid types (e.g., L91.0, Keloid scar, unspecified).
• Ensure documentation specifies the nuchal location to support this diagnosis.
• Consider additional codes for any associated complications, such as secondary infection (e.g., cellulitis).