Poisoning by other antimycobacterial drugs

This code signifies an adverse reaction or overdose resulting from antimycobacterial medications other than those specifically classified elsewhere. It indicates a harmful effect from drugs used to treat mycobacterial infections, such as tuberculosis or leprosy, when the specific drug is not individually coded. This includes both accidental and intentional poisonings.

Use this code when documentation clearly states a poisoning or adverse effect due to an antimycobacterial drug not covered by more specific ICD-9 codes. This typically involves drug classes like ethambutol, pyrazinamide, or cycloserine. Supporting documentation should include the specific drug involved (if known, and if it falls into the "other" category), the nature of the adverse effect, and the context of the poisoning (e.g., accidental overdose, therapeutic misadventure).

• Always attempt to identify the specific antimycobacterial drug if possible; more specific codes exist for certain agents (e.g., isoniazid, rifampin).
• Distinguish between poisoning (adverse effect due to overdose or wrong substance) and adverse effect in therapeutic use (E-codes would be primary for the latter).
• Sequence this code as the primary diagnosis when the poisoning is the reason for the encounter; use an E-code to identify the drug and intent.