ICD-10-CM 2027
ICD-10 code for radiodermatitis
From the official ICD-10-CM alphabetic index entry “Radiodermatitis”. Page updated September 29, 2026.
About coding radiodermatitis
The ICD-10-CM code for radiodermatitis is L58.9 (Radiodermatitis, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on L58.9.
Within L58, choose L58.9 (unspecified) only when documentation doesn't support a more specific option: acute radiodermatitis (L58.0) and chronic radiodermatitis (L58.1).
Use an additional code to identify the source of the radiation (W88, W90).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific radiodermatitis codes (official index)
Common questions about radiodermatitis ICD-10 codes
What is the ICD-10 code for radiodermatitis?
- L58.9 — Radiodermatitis, unspecified. More specific codes apply when the documentation supports them: L58.0, L58.1.
What is the ICD-10 code for acute radiodermatitis?
- L58.0 — Acute radiodermatitis.
What is the ICD-10 code for chronic radiodermatitis?
- L58.1 — Chronic radiodermatitis.
Is L58.9 billable?
- Yes. L58.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L58.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L58.9 as a principal diagnosis.
Is L58.9 a CC or MCC?
- No. L58.9 is neither a CC nor an MCC under MS-DRG v44.0.