| L66 | Cicatricial alopecia [scarring hair loss] | NON-BILLABLE CODE |
| L66.0 | Pseudopelade | BILLABLE CODE |
| L66.1 | Lichen planopilaris | NON-BILLABLE CODE |
| L66.10 | Lichen planopilaris, unspecified | BILLABLE CODE |
| L66.11 | Classic lichen planopilaris | BILLABLE CODE |
| L66.12 | Frontal fibrosing alopecia | BILLABLE CODE |
| L66.19 | Other lichen planopilaris | BILLABLE CODE |
| L66.2 | Folliculitis decalvans | BILLABLE CODE |
| L66.3 | Perifolliculitis capitis abscedens | BILLABLE CODE |
| L66.8 | Other cicatricial alopecia | NON-BILLABLE CODE |
| L66.81 | Central centrifugal cicatricial alopecia | BILLABLE CODE |
| L66.89 | Other cicatricial alopecia | BILLABLE CODE |
| L66.9 | Cicatricial alopecia, unspecified | BILLABLE CODE |
