Poisoning by antidotes and chelating agents, acc, init

This code signifies an adverse event resulting from the accidental or unintentional ingestion, administration, or exposure to an antidote or chelating agent. This typically occurs when these medications, intended to counteract poisons or remove heavy metals, are misused or taken in error, leading to toxic effects.

Apply this code when a patient presents with symptoms of poisoning due to an accidental overdose or incorrect administration of a substance specifically classified as an antidote or chelating agent. This includes situations where a patient mistakenly takes an antidote, or a healthcare professional inadvertently administers the wrong dose or type of chelating agent.

• Ensure documentation clearly states the poisoning was accidental and identifies the substance as an antidote or chelating agent.
• Always assign an additional code for the specific antidote or chelating agent involved (from T36-T50) to provide greater specificity.
• Confirm this is the initial encounter for the poisoning event; subsequent encounters would require different seventh characters.