Poisoning by pyrazole derivatives

This code represents an adverse reaction or overdose resulting from exposure to pyrazole derivatives. These substances are typically non-steroidal anti-inflammatory drugs (NSAIDs) or other medications containing a pyrazole ring structure, leading to systemic toxic effects.

Use this code when documentation clearly indicates poisoning due to a pyrazole derivative, such as phenylbutazone or metamizole. This applies to both accidental and intentional ingestions, as well as adverse effects from therapeutic use that reach toxic levels. Supporting documentation includes toxicology reports, medication lists, and physician notes detailing the substance and its toxic effects.

• Always code the specific manifestation of the poisoning (e.g., acute renal failure, hepatic necrosis) as a primary diagnosis, with this code as a secondary diagnosis.
• Distinguish between poisoning (toxic effect) and adverse effect in therapeutic use; this code is for poisoning.
• Ensure the documentation specifies a pyrazole derivative; do not use for general NSAID poisoning without further specificity.