Toxic effect of carb monx from oth source, slf-hrm, sequela

This code signifies the long-term or residual effects resulting from a deliberate act of self-harm involving carbon monoxide poisoning from a source other than vehicle exhaust or utility gas. These sequelae can manifest as neurological deficits, cardiovascular complications, or other chronic health issues that persist after the acute poisoning event has resolved.

This code is appropriate for documenting the lasting health problems in a patient who previously attempted suicide using carbon monoxide from a non-vehicular or non-utility gas source. It should be used when the patient is being treated for the chronic consequences of that intentional exposure, rather than the acute poisoning itself.

• Always sequence this sequela code after the code for the specific residual condition being treated.
• Ensure documentation clearly links the current condition to a past intentional carbon monoxide poisoning from an "other source."
• Do not use for acute poisoning or for sequelae from accidental or assaultive carbon monoxide exposure.