L91.9 Hypertrophic disorder of the skin, unspecified

Billable ICD-10-CM code, FY2026.

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 701.9 Unspecified hypertrophic and atrophic conditions of skin (approximate)

Code annotations containing back-references to L91.9

Back-references to L91

• Type 2 Excludes: L85 Other epidermal thickening ("hypertrophic disorders of the skin (L91.-)")

Diagnosis Index entries for L91.9

• Disorder (of) › skin › hypertrophic
• Hypertrophy, hypertrophic › skin

Nearby codes

• L91 Hypertrophic disorders of skin
• L91.0 Hypertrophic scar
• L91.8 Other hypertrophic disorders of the skin
• L91.9 Hypertrophic disorder of the skin, unspecified (this code)