L57

Skin changes due to chronic exposure to nonionizing radiation

FY2027Chapter 12: Diseases of the skin and subcutaneous tissue/L55–L59 Radiation-related disorders of the skin and subcutaneous tissue

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

Use additional code
Excludes2

L57 is a non-billable ICD-10-CM code category for skin changes due to chronic exposure to nonionizing radiation. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are L57.0 Actinic keratosis, L57.1 Actinic reticuloid, L57.2 Cutis rhomboidalis nuchae, L57.3 Poikiloderma of Civatte and 4 more. Its coding notes include a Use additional code instruction and 10 Excludes2 entries.

Use additional code

Add the listed code as a secondary code, if known.

This code

code to identify the source of the ultraviolet radiation (W89), or other nonionizing radiation (W90)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (10 notes)

Inherited from Chapter 12 Diseases of the skin and subcutaneous tissue

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
lipomelanotic reticulosis (I89.8)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
systemic connective tissue disorders (M30-M36)
viral warts (B07.-)

More specific codes under L57 8