ICD-10-CM category
L66: Cicatricial alopecia [scarring hair loss]
Codes under L66 (Cicatricial alopecia [scarring hair loss]). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| L66.0 | Pseudopelade | ✓ |
| L66.1 | Lichen planopilaris | — |
| L66.2 | Folliculitis decalvans | ✓ |
| L66.3 | Perifolliculitis capitis abscedens | ✓ |
| L66.4 | Folliculitis ulerythematosa reticulata | ✓ |
| L66.8 | Other cicatricial alopecia | — |
| L66.9 | Cicatricial alopecia, unspecified | ✓ |
| L66.10 | Lichen planopilaris, unspecified | ✓ |
| L66.11 | Classic lichen planopilaris | ✓ |
| L66.12 | Frontal fibrosing alopecia | ✓ |
| L66.19 | Other lichen planopilaris | ✓ |
| L66.81 | Central centrifugal cicatricial alopecia | ✓ |
| L66.89 | Other cicatricial alopecia | ✓ |
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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