Adverse effect of systemic anti-infect/parasit, init

This code signifies an undesirable or harmful reaction experienced by a patient due to the therapeutic use of a systemic anti-infective or antiparasitic medication not otherwise specified. It indicates that the patient is actively receiving treatment for this adverse effect.

Apply this code when a patient presents with symptoms or conditions directly attributable to a systemic anti-infective or antiparasitic drug, and the encounter is for the initial assessment and treatment of that adverse reaction. Examples include allergic reactions, organ toxicity, or severe gastrointestinal disturbances caused by such medications.

• Always sequence the nature of the adverse effect (e.g., rash, hepatitis) before this code.
• Ensure the documentation clearly links the adverse reaction to a specific systemic anti-infective or antiparasitic drug.
• Verify that the encounter is indeed the "initial" one for the adverse effect, as subsequent encounters will use different seventh characters.