Poisoning by antirheumatics, NEC, undetermined, init

This code signifies an adverse health event resulting from an individual's exposure to an antirheumatic medication, where the intent of the exposure (e.g., accidental, intentional self-harm, assault) cannot be determined. The patient is presenting for the initial treatment of this poisoning.

Apply this code when a patient presents with symptoms of poisoning by an antirheumatic drug (e.g., NSAIDs, DMARDs, but excluding salicylates and other specific drug classes with their own codes) and the medical record does not clearly state whether the poisoning was accidental, intentional, or due to an assault. This is for the first encounter related to this specific poisoning event.

• Ensure the documentation explicitly states "undetermined" intent or provides insufficient information to classify the intent.
• Confirm the drug involved is an antirheumatic not otherwise specified in a more specific code.
• Always assign an additional code for the specific manifestation of the poisoning (e.g., acute kidney failure, gastric ulcer).