L91

Non-billable

Hypertrophic disorders of skin

L91 is the ICD-10-CM code for Hypertrophic disorders of skin. It is a non-billable category code — use a more specific child code such as L91.0 for billing.

Status
Header (non-billable)
Chapter
L00-L99
Subcodes
3
Edition
FY2026

L00-L99 Diseases of the skin and subcutaneous tissue

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code L91?
L91 is the ICD-10-CM code for "Hypertrophic disorders of skin". It falls under L00-L99 Diseases of the skin and subcutaneous tissue.
Is L91 a billable code?
No — L91 is a non-billable header code. Use a more specific child code (such as L91.0) for billing.
What are the subcodes of L91?
L91 has 3 more specific child codes, including L91.0, L91.8, L91.9.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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