ICD-10 Code L49.3 – Exfoliation due to erythematous condition involving 30-39 percent of body surface (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L49.3 – Exfoliation due to erythematous condition involving 30-39 percent of body surface
What it is
This code identifies skin exfoliation, or peeling, caused by an erythematous condition affecting 30% to 39% of the body surface. Use it when the record clearly documents both the exfoliative process and the body-surface extent.
Clinical signs
Typical findings include widespread redness with visible peeling or shedding of skin. Clinical features vary; refer to documentation for the underlying erythematous condition and the recorded percentage of body surface involved.
When to use this code
Use L49.3 when the provider documents exfoliation due to an erythematous disorder and specifies that 30% to 39% of the body surface is affected. It is appropriate when the extent is measured or clearly estimated in the note. Check documentation if the percentage is missing or stated differently.
Do not use for
Do not use this code for exfoliation without an erythematous cause, or when the body-surface percentage falls outside 30% to 39%. If the note only says “rash” or “desquamation,” check documentation before assigning L49.3.
Coding tip
Always capture the documented body-surface percentage, because the L49 category is severity-specific and depends on the extent recorded by the provider.