Poisoning by heroin, accidental (unintentional), subs encntr

This code signifies an accidental overdose of heroin, where the patient is receiving follow-up care for the poisoning event. It indicates that the initial treatment for the acute poisoning has already occurred, and the current encounter addresses ongoing effects, complications, or recovery.

Apply this code for patients presenting for subsequent care related to an unintentional heroin poisoning. This includes visits for monitoring organ damage, managing withdrawal symptoms, addressing long-term neurological or cardiac complications, or participating in substance abuse treatment programs following the initial overdose.

• Requires a seventh character to indicate the encounter type (A, D, or S). 'D' is for subsequent encounters.
• Always sequence this code after any codes for the specific manifestations or complications of the poisoning.
• Distinguish carefully between accidental (unintentional) and intentional (self-harm) poisonings.