ICD-10 Code L58.9 – Radiodermatitis, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L58.9 – Radiodermatitis, unspecified
What it is
L58.9 identifies radiodermatitis when the record does not specify the type or severity. Use it for skin changes caused by radiation exposure when documentation is nonspecific.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings include skin redness, dryness, irritation, or peeling in an area exposed to radiation.
When to use this code
Use this code when the clinician documents radiodermatitis without naming an acute, chronic, or other specific form. It also fits when the note confirms radiation-related skin injury but gives no further detail. Check documentation if the record suggests a more specific dermatitis code.
Do not use for
Do not use L58.9 if the chart identifies a more specific radiodermatitis type. Do not apply it to unrelated dermatitis, burns, or skin reactions not linked to radiation.
Coding tip
Code the most specific radiodermatitis term documented; if the note only says “radiodermatitis,” L58.9 is appropriate.