ICD-10 Code L49.1 – Exfoliation due to erythematous condition involving 10-19 percent of body surface (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L49.1 – Exfoliation due to erythematous condition involving 10-19 percent of body surface
What it is
This code identifies skin exfoliation, or peeling, caused by an erythematous condition affecting 10-19% of the body surface. Use it when the record clearly links the desquamation to redness-based skin disease.
Clinical signs
Typical documentation may note diffuse skin redness with peeling or shedding of the outer skin layer. Clinical features vary; refer to documentation for the underlying erythematous disorder and the estimated body surface area involved.
When to use this code
Use L49.1 when the provider documents exfoliation due to an erythematous condition and specifies that 10-19% of body surface is involved. It is appropriate when the diagnosis is made clinically and the extent is recorded in the note. Check documentation if the body-surface estimate is unclear or if another cause of peeling is stated.
Do not use for
Do not use this code for generalized skin peeling without an erythematous cause or when the affected surface area is not documented. Check documentation if the condition is better described by another dermatitis, drug reaction, or burn code.
Coding tip
Verify both the cause and the body-surface percentage before assigning L49.1.