Poisoning by skeletal muscle relaxants, assault, subs encntr

This code signifies a patient presenting with adverse effects or complications resulting from the intentional administration of a skeletal muscle relaxant (neuromuscular blocking agent) by another person, for the purpose of harm. This specific code is used when the patient is receiving follow-up care for the poisoning, after the initial treatment has been provided.

Use this code for patients who are returning for ongoing management of sequelae from a prior poisoning by a skeletal muscle relaxant due to an assault. This includes follow-up appointments for organ damage, neurological deficits, or other chronic conditions directly attributable to the initial poisoning event. It should be applied when the acute phase of treatment has concluded.

• Always use in conjunction with an external cause code (e.g., Y07.-) to fully describe the circumstances of the assault.
• Ensure documentation clearly specifies "subsequent encounter" and the intent of "assault" for accurate code assignment.
• Distinguish from initial encounters (A) or sequela encounters (S) based on the patient's current phase of care.