Adverse effect of unsp systemic antibiotic, subs encntr

This code signifies a patient experiencing a harmful or undesirable reaction to a systemic antibiotic, where the specific antibiotic agent is not documented. The encounter is for follow-up care after the initial adverse event has been addressed.

Apply this code when a patient presents for ongoing management of an adverse effect from an antibiotic, and the medical record does not specify which antibiotic caused the reaction. This is appropriate for subsequent visits related to the adverse effect, such as monitoring resolution of symptoms or adjusting treatment.

• Always sequence this code after the code for the specific adverse effect (e.g., rash, anaphylaxis).
• Only use this code when the specific antibiotic is truly unknown or unstated in the documentation.
• Ensure the "D" seventh character is appropriate for a subsequent encounter, indicating ongoing care for the adverse effect.