ICD-10 Code L49.2 – Exfoliation due to erythematous condition involving 20-29 percent of body surface (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L49.2 – Exfoliation due to erythematous condition involving 20-29 percent of body surface
What it is
This code identifies skin peeling or shedding caused by an erythematous condition, with 20% to 29% of the body surface involved. Use it when documentation clearly links exfoliation to that extent of skin involvement.
Clinical signs
You may see diffuse redness with visible desquamation, scaling, or sheet-like peeling. Clinical features vary; refer to documentation for the cause, distribution, and confirmed body surface percentage.
When to use this code
Use this code when the provider documents exfoliation due to an erythematous condition and specifies 20% to 29% body surface involvement. It fits cases where the diagnosis is based on recorded extent rather than estimation alone. Check documentation if the percentage is unclear or if another cause is stated.
Do not use for
Do not use this code for generalized rash, simple redness, or peeling without documented erythematous cause and body surface range. Do not assign it when another diagnosis better explains the skin findings.
Coding tip
Verify both the erythematous cause and the 20% to 29% body surface estimate before coding.