Hypertrophic disorders of skin
In Other disorders of the skin and subcutaneous tissue (L80-L99), chapter 12: Diseases of the Skin and Subcutaneous Tissue
3 billable codes under L91: none are a CC or MCC; none map to an HCC.
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Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers assigning pressure ulcer codes by site and stage, including unstageable, healing, healed, and progressing ulcers, and coding healing or progressing non-pressure chronic ulcers.
- Pressure ulcer stage codes (page 58)
- Non-Pressure Chronic Ulcers (page 60)
All codes under L91
L91 can't be used on a claim. Pick a billable code below; grey headings group them.
L91 MS-DRGs
As the principal diagnosis, all 3 billable codes under L91 group to MS-DRG 606 or 607 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
Other codes that refer to L91
Notes on these codes point to L91.
- L85 Excludes2: hypertrophic disorders of the skin (L91.-)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Skin Conditions
Your skin is your body's largest organ. It covers the entire outside of your body. There are many ways that your skin protects your body and helps keep you healthy. For example, it:
Read more about skin conditions on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.