Poisoning by oth nonopio analges/antipyret, NEC, undet, subs

This code signifies a poisoning event involving non-opioid pain relievers or fever reducers that are not specified elsewhere, where the intent of the poisoning (e.g., accidental, intentional self-harm) cannot be determined. It is used when the patient is receiving follow-up care for the sequelae or complications of the initial poisoning.

This code is appropriate for subsequent encounters when a patient presents for ongoing management of organ damage, persistent symptoms, or other complications directly resulting from an undetermined poisoning by a non-opioid analgesic or antipyretic. Examples include follow-up for liver damage from acetaminophen, renal impairment from NSAIDs, or ongoing gastric irritation, when the original intent of the overdose was not documented.

• Always assign an additional code for the specific manifestation of the poisoning (e.g., acute kidney failure, toxic hepatitis).
• Ensure the documentation clearly supports "undetermined" intent; if accidental or intentional self-harm is documented, a different intent code should be used.
• This "D" encounter code is used after the initial treatment of the acute poisoning has concluded.