Poisoning by barbiturates, accidental (unintentional), subs

This code signifies an adverse health effect resulting from an unintentional overdose or improper use of a barbiturate medication, occurring during a subsequent encounter for care. The patient is receiving ongoing treatment for the poisoning event, which was not intended.

Apply this code when a patient presents for follow-up care, monitoring, or treatment of complications arising from an accidental barbiturate poisoning. This includes situations like repeat visits to the emergency department, inpatient admissions for continued management, or outpatient appointments for recovery.

• Ensure the documentation clearly states the poisoning was accidental and that this is not the initial encounter for the event.
• Always sequence this code after the primary diagnosis if the poisoning is a secondary condition being managed.
• Verify the specific barbiturate involved if further specificity is available in the medical record.