Poisoning by unsp systemic antibiotic, accidental, sequela

This code signifies a long-term or residual effect resulting from an accidental overdose or adverse reaction to an unspecified systemic antibiotic. It indicates that the acute phase of the poisoning has passed, and the patient is now experiencing a chronic condition or complication directly attributable to the initial event.

Apply this code when documenting a patient presenting with a sequela (e.g., chronic organ damage, persistent neurological deficits, long-term allergic reactions) that is a direct consequence of an unintentional poisoning by an antibiotic, and the specific antibiotic involved is not documented. This code is appropriate for follow-up encounters after the initial acute poisoning has been treated.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a past accidental antibiotic poisoning.
• If the specific antibiotic is known, a more precise T36.x code should be used instead.