Poisn by anticoag antag, vit K and oth coag, slf-hrm, init

This code signifies a deliberate act of self-poisoning involving substances that counteract anticoagulants, such as vitamin K or other coagulants. It indicates an acute, initial presentation where the patient is receiving active treatment for the toxic effects of these agents.

Apply this code when a patient presents to an emergency department or inpatient setting after intentionally ingesting or administering an overdose of anticoagulant antagonists or coagulants. This is appropriate for the initial encounter where diagnosis and treatment for the poisoning are being established.

• Ensure documentation clearly states "intentional self-harm" or similar language to support the intent.
• Confirm the substance involved is an anticoagulant antagonist (e.g., vitamin K) or another coagulant.
• The "A" seventh character indicates an initial encounter, meaning the patient is actively receiving care for the acute poisoning.