Poisoning by anticoagulants

This code signifies an adverse effect resulting from the ingestion, administration, or exposure to anticoagulant medications. This includes both accidental and intentional overdoses, as well as adverse reactions to therapeutic doses. The primary clinical manifestation is typically an increased risk of bleeding or hemorrhage.

Use this code when documentation clearly indicates a patient has experienced poisoning or an adverse reaction due to an anticoagulant. This applies to scenarios such as excessive bleeding, hematoma formation, or other systemic effects directly attributable to the anticoagulant. Supporting documentation includes physician notes detailing the exposure, symptoms, and the specific anticoagulant involved.

• Always code the specific anticoagulant involved using an E-code (e.g., E934.2 for anticoagulants) in addition to this diagnosis code.
• Distinguish between poisoning (overdose, accidental exposure) and adverse effect in therapeutic use; this code covers both.
• Consider additional codes for specific manifestations of the poisoning, such as hemorrhage (e.g., 459.0 for hemorrhage, unspecified).