L66
L66 — Cicatricial alopecia [scarring hair loss]
Non-billable headerICD-10-CM
L66 is a non-billable header ICD-10-CM code for cicatricial alopecia [scarring hair loss]. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with L66
These codes carry an Excludes1 note pointing at L66. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading L66 alone.
- L43Lichen planus
Risk adjustment
L66 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead L66
7 child codes. Green means billable.
Questions about L66
- Is L66 a billable ICD-10-CM code?
- No. L66 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does L66 sit in the tabular list?
- Diseases of the skin and subcutaneous tissue (L00-L99), in the block Disorders of skin appendages (L60-L75).