L91.0 Hypertrophic scar

Billable ICD-10-CM code, FY2026.

Applicable to

• Keloid
• Keloid scar

Excludes2 (not included here)

• acne keloid (L73.0)
• scar NOS (L90.5)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 701.4 Keloid scar

Code annotations containing back-references to L91.0

Back-references to L91.0

• Type 2 Excludes: L90.5 Scar conditions and fibrosis of skin ("hypertrophic scar (L91.0)")
• Type 2 Excludes: L90.5 Scar conditions and fibrosis of skin ("keloid scar (L91.0)")

Back-references to L91

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

Diagnosis Index entries for L91.0

• Hypertrophy, hypertrophic › scar
• Kelis
• Keloid, cheloid
• Keloid, cheloid › Hawkin's
• Keloid, cheloid › scar
• Keloma
• Scar, scarring › cheloid
• Scar, scarring › hypertrophic
• Scar, scarring › keloid

Nearby codes

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