ICD-10 Code L58 – Radiodermatitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L58 – Radiodermatitis
What it is
L58 identifies radiodermatitis, a skin reaction caused by exposure to radiation. It covers inflammatory skin changes that occur after therapeutic or accidental radiation exposure.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include erythema, dryness, desquamation, tenderness, or skin ulceration in the exposed area.
When to use this code
Use L58 when the record documents dermatitis or skin injury due to radiation exposure. Code it for acute or chronic skin effects attributed to radiotherapy or other radiation sources. You should confirm the note links the skin condition to radiation.
Do not use for
Do not use this code for nonspecific dermatitis without a radiation cause. If the chart does not clearly document radiation as the reason, check documentation.
Coding tip
Assign L58 only when the provider explicitly connects the skin findings to radiation exposure.