Toxic effect of carb monx from oth source, self-harm, init

This code signifies a patient presenting with poisoning due to carbon monoxide exposure from a source other than vehicle exhaust, utility gas, or industrial/residential gases. The exposure is explicitly determined to be an act of intentional self-harm. The "A" suffix indicates this is the initial encounter for this specific poisoning event.

Apply this code when a patient is admitted or seen in the emergency department following a suicide attempt involving carbon monoxide from sources like charcoal burning indoors, a faulty appliance not related to utility gas, or other non-specified sources. This code is appropriate for the initial assessment and treatment of the acute toxic effects.

• Always assign an external cause code (X67.-) in conjunction with this code to fully describe the circumstances of the poisoning.
• Ensure documentation clearly specifies "intentional self-harm" and a non-specified carbon monoxide source.
• Do not use this code for accidental exposures or exposures from vehicle exhaust, utility gas, or industrial/residential gases.