L91.8 — Other hypertrophic disorders of the skin
L91.8 is a billable, specific ICD-10-CM code for other hypertrophic disorders of the skin. It is valid for submission on a claim.
Risk adjustment
L91.8 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
L91.8 is named in 9 Medicare coverage policies — 9 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56439Billing and Coding: Blepharoplasty
- A57044Billing and Coding: Removal of Benign Skin Lesions
- A57113Billing and Coding: Removal of Benign Skin Lesions
- A57113Billing and Coding: Removal of Benign Skin Lesions
How L91.8 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 L91.8.
- Tag(hypertrophied skin) (infected)
- Tag›skin
- Cutis›verticis gyrata›acquired
- Hypertrophy, hypertrophic›skin›specified NEC
- Disorder›skin›hypertrophic›specified NEC
Related codes at this level
Codes that share L91. If L91.8 is not quite right, the correct code is usually one of these.
Questions about L91.8
- Is L91.8 a billable ICD-10-CM code?
- Yes. L91.8 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does L91.8 sit in the tabular list?
- Diseases of the skin and subcutaneous tissue (L00-L99), in the block Other disorders of the skin and subcutaneous tissue (L80-L99).