Poisn by unsp nonopi analgs/antipyr/antirheu, undet, sequela

This code signifies a poisoning event involving an unspecified nonopioid analgesic, antipyretic, or antirheumatic medication where the intent (accidental, intentional self-harm, assault) cannot be determined. The "S" at the end indicates that this code is used for sequelae, meaning it describes a condition or complication arising as a direct result of the initial poisoning event, after the acute phase has passed.

Apply this code when documenting a long-term effect or residual condition stemming from a past poisoning by an unknown nonopioid pain reliever, fever reducer, or anti-inflammatory drug. This would be used in follow-up encounters for chronic issues, organ damage, or other lasting health problems directly attributable to the original undetermined poisoning.

• Always use an external cause code (V00-Y99) in conjunction with this code to provide more detail about the circumstances of the poisoning, if known.
• Ensure the medical record clearly documents the link between the current condition and the past poisoning event, and that the intent remains undetermined.
• This code is for sequelae only; for the initial encounter or subsequent encounters during the acute phase, use the appropriate acute poisoning code without the "S" suffix.