ICD-10 Code L58.1 – Chronic radiodermatitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L58.1 – Chronic radiodermatitis
What it is
Chronic radiodermatitis is long-term skin damage caused by prior radiation exposure. You use this code when the record shows persistent radiation-related skin changes rather than an acute reaction.
Clinical signs
Typical findings include dry, atrophic, fragile, or discolored skin in an area previously exposed to radiation. Clinical features vary; refer to documentation.
When to use this code
Use L58.1 when the provider documents chronic radiodermatitis, late radiation skin injury, or ongoing skin changes from earlier radiotherapy. It is appropriate when the condition is current and clearly linked to prior radiation exposure. Check documentation if the note only mentions a history of radiation without active skin findings.
Do not use for
Do not use this code for acute radiation dermatitis or unspecified radiation skin effects. If the chart describes a different skin disorder without clear radiation-related chronicity, check documentation.
Coding tip
Confirm both chronicity and the radiation cause in the note before assigning L58.1.