L91.9Billable
Hypertrophic disorder of the skin, unspecified
- Chapter
- 12. Diseases of the skin and subcutaneous tissue
- Category
- L91
- Effective date
- October 1, 2026
Related codes in category L91
Frequently asked questions
What is ICD-10 code L91.9?
L91.9 is an ICD-10-CM diagnosis code for Hypertrophic disorder of the skin, unspecified.
Is L91.9 a billable code?
Yes. L91.9 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is L91.9 in?
L91.9 falls under Chapter 12: Diseases of the skin and subcutaneous tissue.
When did L91.9 become effective?
L91.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to L91.9?
L91.9 belongs to category L91, which includes 3 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.