ICD-10-CM 2027
ICD-10 code for actinic dermatitis
From the official ICD-10-CM alphabetic index entry “Dermatitis (eczematous) › actinic (due to sun)”. Page updated September 29, 2026.
About coding actinic dermatitis
The ICD-10-CM code for actinic 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 actinic dermatitis codes (official index)
- other than from sun L59.8 — Other specified disorders of the skin and subcutaneous tissue related to radiation
Common questions about actinic dermatitis ICD-10 codes
What is the ICD-10 code for actinic dermatitis?
- L57.8 — Other skin changes due to chronic exposure to nonionizing radiation. More specific codes apply when the documentation supports them: L59.8.
What is the ICD-10 code for other than from sun actinic dermatitis?
- L59.8 — Other specified disorders of the skin and subcutaneous tissue related to 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.