Other congenital malformations of hair

This code represents various congenital abnormalities of hair development not classified elsewhere. These conditions are present at birth and involve structural or developmental defects of the hair shaft or follicle, leading to unusual hair growth patterns, texture, or distribution. Examples include congenital hypotrichosis, pili torti, or monilethrix when not specified as part of a broader syndrome.

Use this code when documentation specifies a congenital hair malformation that doesn't have a more specific ICD-10-CM code. This typically applies to isolated hair anomalies or those not clearly linked to a named syndrome. Physician notes should clearly describe the specific congenital hair abnormality observed.

• Always review documentation for a more specific code before assigning this "other" category.
• If the hair malformation is part of a recognized syndrome, code the syndrome first, and then consider an additional code for the hair anomaly if specified by coding guidelines.
• Distinguish from acquired hair conditions (e.g., alopecia areata) which are coded elsewhere.