Poisoning by 4-Aminophenol derivatives, accidental, subs

This code signifies an accidental poisoning due to a 4-aminophenol derivative, such as acetaminophen, where the patient is receiving follow-up care for the sequelae of the initial poisoning. This indicates that the acute phase of the poisoning has passed, but the patient is still being treated for its effects.

Use this code when documenting subsequent visits for a patient who previously experienced an unintentional overdose of a 4-aminophenol derivative and is now being managed for ongoing complications like liver damage, renal impairment, or other lingering effects. This applies to situations where the patient is no longer in the emergency or acute inpatient setting for the initial poisoning.

• Always sequence this code after a code identifying the specific manifestation of the poisoning (e.g., acute hepatic failure).
• Ensure documentation clearly states the poisoning was accidental and that the encounter is for follow-up care, not the initial acute treatment.
• Distinguish this from initial encounters (A) or sequela encounters (S) for the same condition.