ICD-10-CM 2027
ICD-10 code for subcutaneous atrophy
From the official ICD-10-CM alphabetic index entry “Atrophy, atrophic (of) › subcutaneous”. Page updated September 29, 2026.
About coding subcutaneous atrophy
The ICD-10-CM code for subcutaneous atrophy is L90.9 (Atrophic disorder of skin, unspecified).
Within L90, choose L90.9 (Atrophic disorder of skin, unspecified) only when documentation doesn't support a more specific option: 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), scar conditions and fibrosis of skin (L90.5), Striae atrophicae (L90.6) and other atrophic disorders of skin (L90.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about subcutaneous atrophy ICD-10 codes
What is the ICD-10 code for subcutaneous atrophy?
- L90.9 — Atrophic disorder of skin, unspecified.
Is L90.9 billable?
- Yes. L90.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L90.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L90.9 as a principal diagnosis.
Is L90.9 a CC or MCC?
- No. L90.9 is neither a CC nor an MCC under MS-DRG v44.0.