Adverse effect of antimycobacterial drugs, initial encounter

This code signifies a patient experiencing an unintended and harmful reaction to medication specifically used to treat mycobacterial infections, such as tuberculosis or leprosy. The adverse effect is occurring for the first time or is being treated for the first time.

Use this code when a patient presents with symptoms or signs that are directly attributable to a prescribed antimycobacterial drug. This includes allergic reactions, organ toxicity, or other undesirable side effects requiring initial evaluation and management.

• Always code the specific adverse effect first, followed by this code.
• Ensure documentation clearly links the adverse effect to an antimycobacterial drug.
• "Initial encounter" implies the patient is receiving active treatment for the adverse effect.