Neonatal erythema toxicum

Neonatal erythema toxicum is a common, benign, transient rash affecting full-term newborns, typically appearing within the first few days of life. It presents as erythematous macules, papules, and pustules, often with a "flea-bitten" appearance, primarily on the trunk and proximal extremities. The rash is self-limiting and resolves spontaneously without intervention.

This code is used when documenting a diagnosis of erythema toxicum in a newborn. It applies to cases where the characteristic rash is observed and diagnosed clinically, without requiring laboratory confirmation. Documentation should clearly describe the rash's appearance, location, and onset within the neonatal period.

• Do not confuse with other neonatal rashes such as transient neonatal pustular melanosis or miliaria.
• This is a diagnosis code for a benign condition; no further treatment or procedural codes are typically associated.
• Ensure the patient's age at diagnosis falls within the neonatal period (birth to 28 days).