L91 ICD-10-CM Code: Hypertrophic disorders of skin
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
L91Hypertrophic disorders of skin
ICD-10-CM diagnosis code · United States clinical modification
Where L91 sits
- 1
Chapter 12
Diseases of the skin and subcutaneous tissue (L00-L99)
- 2
Section
Other disorders of the skin and subcutaneous tissue (L80-L99)
- 3
Category L91
Hypertrophic disorders of skin
- 4
Code L91
Hypertrophic disorders of skin
Codes under L91
L91 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Notes for this code
Inclusion terms
No inclusion terms are listed for L91.
Code first
No “code first” instruction is listed for L91.
Use additional code
No “use additional code” instruction is listed for L91.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for L91.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for L91.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code L91 mean?
L91 is the FY 2027 U.S. ICD-10-CM code for “Hypertrophic disorders of skin.”
Is L91 a billable or specific ICD-10-CM code?
No. L91 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is L91 located in ICD-10-CM?
L91 is listed in Chapter 12, Diseases of the skin and subcutaneous tissue (L00-L99), within Other disorders of the skin and subcutaneous tissue (L80-L99) (L80–L99), under category L91, Hypertrophic disorders of skin.
What coding notes are listed for L91?
No inclusion terms are listed for L91 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.