Poisoning by antirheumatics, NEC, undetermined, sequela

This code signifies a past event of poisoning by an antirheumatic medication, where the intent (accidental, intentional self-harm, assault) is unknown, and the patient is now experiencing a residual condition or complication directly related to that prior poisoning. It indicates that the acute phase of the poisoning has resolved, but its long-term effects are still present and being treated.

Apply this code when documentation clearly links a current health problem (e.g., chronic organ damage, neurological deficits) to a previously experienced antirheumatic poisoning of undetermined intent. This is appropriate for follow-up encounters where the sequelae, not the acute poisoning, are the focus of treatment.

• Always sequence this code after the code(s) for the specific sequela(e) being treated.
• Ensure the medical record explicitly states the poisoning was by an antirheumatic and that the intent was undetermined.
• Verify that the encounter is for the sequela of the poisoning, not the acute poisoning event itself.