ICD-10-CM 2027
ICD-10 code for CCCA
From the official ICD-10-CM alphabetic index entry “CCCA (central centrifugal cicatricial alopecia)”. Page updated September 29, 2026.
About coding CCCA
The ICD-10-CM code for CCCA is L66.81 (Central centrifugal cicatricial alopecia).
Within L66.8 (other cicatricial alopecia), L66.81 is specifically for central centrifugal cicatricial alopecia. Related codes cover other cicatricial alopecia (L66.89).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about CCCA ICD-10 codes
What is the ICD-10 code for CCCA?
- L66.81 — Central centrifugal cicatricial alopecia.
Is L66.81 billable?
- Yes. L66.81 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L66.81 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L66.81 as a principal diagnosis.
Is L66.81 a CC or MCC?
- No. L66.81 is neither a CC nor an MCC under MS-DRG v44.0.