Poisoning by therapeutic gases, assault, initial encounter

This code signifies an intentional act of harm involving the administration of therapeutic gases, resulting in a poisoning effect. The patient is experiencing the initial phase of treatment for this assault.

Apply this code when a patient presents with symptoms of poisoning due to therapeutic gases, and the medical record clearly documents that the exposure was a deliberate act of assault. This would be used for the initial hospital admission or encounter for this specific event.

• Ensure documentation explicitly states "assault" as the intent of the poisoning.
• Confirm the substance involved is a therapeutic gas, not an industrial or household gas.
• Pair with external cause codes (e.g., Y07.-) to fully describe the circumstances of the assault.