Underdosing of aminoglycosides, subsequent encounter

This code indicates that a patient is experiencing an adverse effect due to receiving an insufficient amount of an aminoglycoside antibiotic, and this is being addressed during a follow-up visit. This underdosing could lead to inadequate treatment of the infection the aminoglycoside was prescribed for, potentially causing persistent or worsening symptoms.

Use this code when documenting a patient's subsequent encounter for complications arising from an underdosed aminoglycoside, such as persistent infection, treatment failure, or the need for dosage adjustment. This applies to situations where the initial underdosing has already been identified and the patient is returning for ongoing management.

• Always sequence this code after the primary diagnosis for the condition being treated by the aminoglycoside.
• Ensure documentation clearly specifies "underdosing" and the specific aminoglycoside involved.
• Verify that the encounter is indeed "subsequent" and not an initial presentation of the underdosing issue.