Sequelae of toxic polyneuropathy

This code signifies the persistent neurological deficits or long-term complications that arise as a direct result of a toxic polyneuropathy. It describes the chronic effects on the peripheral nervous system after exposure to neurotoxic substances (e.g., certain medications, industrial chemicals, heavy metals) has caused nerve damage.

Use this code when documenting ongoing symptoms such as chronic pain, sensory disturbances (numbness, tingling), motor weakness, or autonomic dysfunction that persist after the acute phase of toxic exposure and the initial polyneuropathy have resolved or stabilized. Documentation should clearly link the current neurological sequelae to a previously diagnosed toxic polyneuropathy.

• Always sequence this code after the code identifying the specific toxic agent, if known and still relevant to the current encounter.
• Do not use this code for acute or active toxic polyneuropathy; use codes from G62.2 for those cases.
• Ensure the medical record explicitly states "sequelae of" or "due to previous" toxic polyneuropathy to support its use.