Poisoning by other opioids, undetermined, sequela

This code signifies a long-term health condition or complication resulting from a poisoning event involving opioids other than heroin, methadone, or other specified synthetic narcotics. The intent of the poisoning (e.g., accidental, intentional self-harm, assault) could not be determined at the time of the initial event. This "sequela" code is used to report the residual effects of that past poisoning.

Apply this code when documenting a patient presenting with a chronic medical issue directly attributable to a previous poisoning by an unspecified opioid, where the initial intent was undetermined. This is appropriate for follow-up encounters addressing the lasting impact of the poisoning, such as organ damage, neurological deficits, or chronic pain syndromes.

• Always sequence this code after the code(s) for the specific sequela being treated (e.g., chronic kidney disease, anoxic brain injury).
• Ensure documentation clearly links the current condition to a past opioid poisoning event with undetermined intent.
• Do not use this code for the initial acute poisoning encounter; use the acute poisoning code with the appropriate 7th character for initial encounter.