Poisoning by aminoglycosides, undetermined, sequela

This code indicates a poisoning event due to aminoglycoside antibiotics where the specific intent (accidental, intentional self-harm, assault) is unknown, and the patient is experiencing a residual condition or complication directly related to the initial poisoning. It signifies that the acute phase of the poisoning has passed, but ongoing effects persist.

Apply this code when documentation clearly links a current sequela (e.g., permanent hearing loss, kidney damage) to a past aminoglycoside poisoning, and the original poisoning event's intent was not specified. This is appropriate for follow-up encounters addressing these long-term effects.

• Always sequence this code after the code for the specific sequela being treated (e.g., H91.0- for ototoxic hearing loss).
• Ensure the medical record explicitly states "undetermined" for the intent of the poisoning and documents the causal link to aminoglycosides.
• Do not use for acute poisoning events; those require codes from the T36.5X1-T36.5X3 series.