L66.11 — Classic lichen planopilaris
L66.11 is a billable, specific ICD-10-CM code for classic lichen planopilaris. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Follicular lichen planus
Risk adjustment
L66.11 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.
Medicare coverage
L66.11 is named in 5 Medicare coverage policies — 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A57113Billing and Coding: Removal of Benign Skin Lesions
- A57113Billing and Coding: Removal of Benign Skin Lesions
- A57113Billing and Coding: Removal of Benign Skin Lesions
- A57113Billing and Coding: Removal of Benign Skin Lesions
How L66.11 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to L66.11.
- Lichen›planopilaris›classic
- Lichen›planopilaris›follicular
- Lichen›planus›follicular
Related codes at this level
Codes that share L66.1. If L66.11 is not quite right, the correct code is usually one of these.
Questions about L66.11
- Is L66.11 a billable ICD-10-CM code?
- Yes. L66.11 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does L66.11 sit in the tabular list?
- Diseases of the skin and subcutaneous tissue (L00-L99), in the block Disorders of skin appendages (L60-L75).