L66.9 Cicatricial alopecia, unspecified

Billable ICD-10-CM code, FY2026.

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 704.09 Other alopecia (approximate)

Diagnosis Index entries for L66.9

• Alopecia (hereditaria) (seborrheica) › cicatricial

Nearby codes

• L66.3 Perifolliculitis capitis abscedens
• L66.4 Folliculitis ulerythematosa reticulata
• L66.8 Other cicatricial alopecia
• L66.81 Central centrifugal cicatricial alopecia
• L66.89 Other cicatricial alopecia
• L66.9 Cicatricial alopecia, unspecified (this code)