L91: Hypertrophic disorders of skin
Codes under L91 (Hypertrophic disorders of skin). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| L91.0 | Hypertrophic scar | ✓ |
| L91.0 | Hypertrophic scar | ✓ |
| L91.8 | Other hypertrophic disorders of the skin | ✓ |
| L91.8 | Other hypertrophic disorders of the skin | ✓ |
| L91.9 | Hypertrophic disorder of the skin, unspecified | ✓ |
| L91.9 | Hypertrophic disorder of the skin, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code L91?
L91 is an ICD-10-CM category covering Hypertrophic disorders of skin. It contains 6 more specific diagnosis codes, 6 of which are billable.
Is L91 a billable code?
No — L91 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example L91.0 — Hypertrophic scar). 6 of the 6 codes under L91 are billable.
What codes fall under L91?
L91 includes L91.0, L91.0, L91.8, L91.8, L91.9, plus 1 more. See the full list with descriptions and billable status above.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free