Poisoning by skeletal muscle relaxants, undet, sequela

This code signifies a long-term health problem or condition that has resulted from a past poisoning event involving skeletal muscle relaxants, where the intent of the poisoning (accidental, intentional self-harm, assault) could not be determined. The patient is no longer in the acute phase of the poisoning but is experiencing residual effects.

Apply this code when documenting a chronic condition, disability, or other lasting health consequence directly attributable to a previous, undeterminable poisoning by neuromuscular blocking agents. This is appropriate for follow-up encounters after the initial poisoning has been treated, and the patient is dealing with ongoing sequelae.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic respiratory failure, nerve damage).
• Ensure documentation clearly links the current condition to a past poisoning by skeletal muscle relaxants with an undetermined intent.
• Do not use this code for acute poisoning events; instead, use the appropriate acute poisoning code with the 7th character for initial or subsequent encounter.