Poisoning by coronary vasodilators

This code indicates an adverse physiological effect resulting from the ingestion, injection, or application of a coronary vasodilator. This includes both accidental and intentional overdose, as well as adverse reactions to therapeutic doses. The poisoning manifests as systemic symptoms related to the drug's mechanism of action on the cardiovascular system.

Apply this code when documentation clearly states a patient has experienced poisoning due to a coronary vasodilator, such as nitrates or calcium channel blockers. This is appropriate for cases of drug toxicity, overdose, or an adverse effect from a correctly prescribed medication. Supporting documentation should detail the substance, route, and resulting clinical presentation.

• Always code the specific manifestation of the poisoning (e.g., hypotension, arrhythmia) in addition to this code.
• Distinguish between poisoning (adverse effect due to drug, overdose, or wrong substance) and adverse effect in therapeutic use (E-code required for external cause).
• Review documentation for intent (accidental vs. intentional self-harm) to assign the appropriate E-code.