Poisoning by oth drugs acting on muscles, undet, sequela

This code signifies a long-term or residual effect resulting from a poisoning by a drug that primarily affects muscle function, where the intent of the poisoning (e.g., accidental, intentional self-harm, assault) cannot be determined. These sequelae are chronic conditions or complications that persist after the acute phase of the poisoning has resolved.

Use this code when documenting a patient presenting with a current, lasting health problem directly attributable to a past poisoning by a muscle-acting drug, and the original intent of that poisoning was never established. Examples include chronic muscle weakness, spasticity, or other neuromuscular deficits that are a direct consequence of the previous poisoning event.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic muscle weakness).
• Ensure documentation clearly links the current condition to a past poisoning event and explicitly states the undetermined intent.
• Verify that the drug involved specifically targets muscle function, such as certain muscle relaxants or neuromuscular blockers.