ICD-10 Code L57.8 – Other skin changes due to chronic exposure to nonionizing radiation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L57.8 – Other skin changes due to chronic exposure to nonionizing radiation
What it is
L57.8 identifies skin changes caused by long-term exposure to nonionizing radiation, such as repeated ultraviolet exposure. It is used when the documented skin condition does not fit a more specific radiation-related diagnosis.
Clinical signs
Findings may include chronic skin damage, discoloration, thickening, or other changes linked to repeated exposure. Clinical features vary; refer to documentation for the exact skin findings and exposure history.
When to use this code
Use this code when the record clearly links the skin changes to chronic nonionizing radiation exposure and no more specific code applies. It is appropriate for documentation of persistent skin effects from repeated sunlight or similar exposure. Check documentation if the cause is uncertain.
Do not use for
Do not use it for acute sunburn, skin cancer, or unrelated dermatitis. If the chart describes a more specific radiation-related condition, code that diagnosis instead.
Coding tip
Confirm that the provider documents both the chronic exposure and the resulting skin change before assigning L57.8.