ICD-10 L66.12
Billable / SpecificFrontal fibrosing alopecia
About ICD-10-CM L66.12
ICD-10-CM code L66.12 represents Frontal fibrosing alopecia. This is a billable/specific code in the Skin and Subcutaneous Tissue chapter (block L66). The 2026 edition of ICD-10-CM L66.12 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under L66.12. Per CMS ICD-10-CM Tabular 2026.
- FFA
Medicare LCD Coverage for L66.12
Local Coverage Determinations (LCDs) from CMS MACs that list L66.12 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing L66.12.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but L66.12 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with L66.12
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To L66.12
Other codes in section L60-L75 (Disorders of skin appendages).
ICD-10 L66.12, Billing FAQ
Is ICD-10 code L66.12 billable? +
Yes, L66.12 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to L66.12? +
ICD-10 L66.12 includes: FFA.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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