Toxic effect of carb monx from unsp source, assault, init

This code signifies a patient presenting with symptoms or signs of carbon monoxide poisoning resulting from an intentional act of harm by another person. The source of the carbon monoxide exposure is not documented or is unknown. This code is specifically for the initial phase of treatment for this acute toxic effect.

Apply this code when a patient is diagnosed with carbon monoxide toxicity due to an assault, and the specific origin of the carbon monoxide (e.g., faulty furnace, car exhaust) is not identified in the medical record. It is appropriate for the first encounter where the patient is receiving active treatment for the poisoning.

• Always assign an external cause code (Y07.-) to further specify the perpetrator of the assault.
• Do not use this code if the carbon monoxide source is known; instead, use a more specific T58.- code.
• Ensure documentation clearly supports carbon monoxide poisoning as a result of an assault.