L66 Cicatricial alopecia [scarring hair loss]
ICD-10-CM category L66 sits in Chapter 12 (Diseases of the skin and subcutaneous tissue, L00-L99). It contains 11 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
L66.1 Lichen planopilarisL66.8 Other cicatricial alopecia
Billable codes in L66
| Code | Description |
|---|---|
L66.0 | Pseudopelade |
L66.10 | Lichen planopilaris, unspecified |
L66.11 | Classic lichen planopilaris |
L66.12 | Frontal fibrosing alopecia |
L66.19 | Other lichen planopilaris |
L66.2 | Folliculitis decalvans |
L66.3 | Perifolliculitis capitis abscedens |
L66.4 | Folliculitis ulerythematosa reticulata |
L66.81 | Central centrifugal cicatricial alopecia |
L66.89 | Other cicatricial alopecia |
L66.9 | Cicatricial alopecia, unspecified |
Search within ICD-10-CM for L66 and related codes
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