Toxic effect of hydrogen cyanide, assault, initial encounter

This code signifies the adverse health effects resulting from exposure to hydrogen cyanide, specifically when the exposure is due to an intentional act of harm against the patient. It indicates the initial phase of treatment for such an poisoning.

Apply this code when documenting a patient presenting with symptoms of hydrogen cyanide toxicity, and the medical record clearly states the exposure was due to an assault. This is appropriate for the initial hospital visit or emergency department encounter for this specific type of poisoning.

• Ensure documentation explicitly states "assault" as the intent of exposure.
• Confirm the substance is hydrogen cyanide, not another toxic agent.
• This "initial encounter" code is used for as long as the patient is receiving active treatment for the toxic effect.