Dermatitis due to drugs and medicines taken internally

This code represents an inflammatory skin reaction caused by systemic exposure to a medication. It manifests as a rash or other dermatological symptoms that develop after a drug is ingested, injected, or absorbed internally. The reaction is an adverse effect of the drug, not a direct toxic effect.

Assign this code when documentation clearly indicates a dermatitis (e.g., maculopapular rash, urticaria, erythema multiforme) that is directly attributed to a drug or medicine taken orally, intravenously, intramuscularly, or via other internal routes. The physician's assessment must establish a causal link between the medication and the skin condition.

• Always identify the specific drug causing the reaction using an E-code (E930.0-E949.9) for adverse effects of drugs in therapeutic use.
• Distinguish from contact dermatitis (692.x) where the skin reaction is due to external contact with a substance.
• Do not use for localized skin reactions at an injection site unless the reaction is clearly systemic in nature.