ICD-10-CM 2027
ICD-10 code for ultraviolet dermatitis
From the official ICD-10-CM alphabetic index entry “Dermatitis (eczematous) › ultraviolet (sun) (chronic exposure)”. Page updated September 29, 2026.
About coding ultraviolet dermatitis
The ICD-10-CM code for ultraviolet dermatitis is L57.8 (Other skin changes due to chronic exposure to nonionizing radiation). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on L57.8.
Within L57, choose L57.8 (Other skin changes due to chronic exposure to nonionizing radiation) only when documentation doesn't support a more specific option: actinic keratosis (L57.0), actinic reticuloid (L57.1), cutis rhomboidalis nuchae (L57.2), Poikiloderma of Civatte (L57.3), cutis laxa senilis (L57.4), actinic granuloma (L57.5) and unspecified (L57.9).
Use an additional code to identify the source of the ultraviolet radiation (W89), or other nonionizing radiation (W90).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific ultraviolet dermatitis codes (official index)
- acute L56.8 — Other specified acute skin changes due to ultraviolet radiation
Common questions about ultraviolet dermatitis ICD-10 codes
What is the ICD-10 code for ultraviolet dermatitis?
- L57.8 — Other skin changes due to chronic exposure to nonionizing radiation. More specific codes apply when the documentation supports them: L56.8.
What is the ICD-10 code for acute ultraviolet dermatitis?
- L56.8 — Other specified acute skin changes due to ultraviolet radiation.
Is L57.8 billable?
- Yes. L57.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L57.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L57.8 as a principal diagnosis.
Is L57.8 a CC or MCC?
- No. L57.8 is neither a CC nor an MCC under MS-DRG v44.0.