Poisoning by antitussives, undetermined, sequela

This code indicates a long-term health condition or complication resulting from a past poisoning event involving antitussive medications (cough suppressants). The intent of the original poisoning, whether accidental, intentional self-harm, assault, or therapeutic error, could not be determined at the time of the initial event. The sequela represents the lasting effects of that undetermined poisoning.

Use this code when documenting a patient presenting with a chronic or residual condition directly attributable to a previous poisoning by antitussive agents, and the original intent of the poisoning was not specified or is unknown. This code is appropriate for follow-up encounters addressing these persistent effects, long after the acute phase of the poisoning has resolved.

• Always sequence this sequela code after the code(s) for the specific residual condition(s) being treated.
• Do not use this code for acute poisoning events; use the appropriate acute poisoning code with the 7th character "A" for initial encounter.
• If the intent of the original poisoning is later determined, a more specific sequela code (e.g., T48.3X1S for accidental) should be used instead.