Adverse effect of antifungal antibiotics, sys used, subs

This code signifies a patient experiencing an unintended and harmful reaction to an antifungal medication administered systemically, during a follow-up visit for that adverse effect. It indicates that the initial treatment for the adverse effect has already begun, and the patient is now being seen for continued management or monitoring of the reaction.

Use this code when a patient presents for ongoing care related to an adverse drug reaction from a systemically administered antifungal, such as liver enzyme elevation, renal dysfunction, or severe rash, after the initial encounter where the adverse effect was first identified and treated. This applies to situations where the patient is returning for a check-up, dose adjustment, or further diagnostic testing related to the adverse effect.

• Always sequence this code after the code for the specific manifestation of the adverse effect (e.g., code for acute kidney failure if that's the adverse effect).
• Ensure documentation clearly states the adverse effect is due to a systemically administered antifungal and that this is a subsequent encounter.
• Distinguish from initial encounters (A) or sequela (S) by carefully reviewing the patient's visit history and current treatment phase.