Poisoning by aminoglycosides, undetermined, subs encntr

This code indicates a poisoning event due to an aminoglycoside antibiotic where it is unknown whether the poisoning was accidental or intentional. The "subsequent encounter" designation means the patient is receiving follow-up care for the poisoning, such as monitoring for ongoing effects or managing complications, after the initial treatment of the acute event.

Use this code for patients presenting for ongoing management of aminoglycoside toxicity, such as nephrotoxicity or ototoxicity, when the intent of the poisoning (e.g., accidental overdose, intentional self-harm) cannot be determined from the medical record. This applies to follow-up visits after the acute phase of poisoning has been addressed.

• Always assign an additional code for the specific manifestation of the poisoning (e.g., acute kidney failure, hearing loss).
• Ensure the documentation clearly supports "undetermined" intent; otherwise, a more specific intent code should be used.
• This code is for follow-up care; for the initial encounter, a different 7th character (A) would be appropriate.