Critical illness polyneuropathy

This code represents a severe form of peripheral neuropathy that develops in critically ill patients, typically those in intensive care units. It is characterized by widespread weakness and muscle wasting, resulting from damage to the peripheral nerves due to systemic inflammation and organ dysfunction.

Use this code for patients presenting with new-onset flaccid weakness, diminished or absent deep tendon reflexes, and electrophysiological evidence of axonal polyneuropathy, occurring in the context of critical illness such as sepsis, multi-organ failure, or prolonged mechanical ventilation. Documentation should clearly link the neuropathy to the critical illness.

• Ensure documentation specifies "critical illness" as the underlying cause of the polyneuropathy to differentiate it from other acquired neuropathies.
• This code should be sequenced after the code for the underlying critical illness (e.g., sepsis, acute respiratory failure).
• Avoid using this code for neuropathies with other identified causes, such as drug-induced or metabolic neuropathies, unless they are directly attributed to the critical illness.