ICD-10-CM 2027
ICD-10 code for atrophic scar
From the official ICD-10-CM alphabetic index entry “Scar, scarring › atrophic”. Page updated September 29, 2026.
About coding atrophic scar
The ICD-10-CM code for atrophic scar is L90.5 (Scar conditions and fibrosis of skin).
Within L90 (atrophic disorders of skin), L90.5 is specifically for scar conditions and fibrosis of skin. Related codes cover lichen sclerosus et atrophicus (L90.0), Anetoderma of Schweninger-Buzzi (L90.1), Anetoderma of Jadassohn-Pellizzari (L90.2), Atrophoderma of Pasini and Pierini (L90.3), acrodermatitis chronica atrophicans (L90.4), Striae atrophicae (L90.6), other atrophic disorders of skin (L90.8) and atrophic disorder of skin, unspecified (L90.9).
The conditions in its Excludes2 note aren't part of L90.5, but may be coded alongside it if the patient has both: hypertrophic scar (L91.0) and keloid scar (L91.0).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about atrophic scar ICD-10 codes
What is the ICD-10 code for atrophic scar?
- L90.5 — Scar conditions and fibrosis of skin.
Is L90.5 billable?
- Yes. L90.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L90.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L90.5 as a principal diagnosis.
Is L90.5 a CC or MCC?
- No. L90.5 is neither a CC nor an MCC under MS-DRG v44.0.