Stenosis due to nervous system prosth dev/grft, subs

This code indicates a narrowing or stricture that has developed as a complication of a previously implanted prosthetic device, implant, or graft within the nervous system. This stenosis is a direct consequence of the presence of the foreign body, impacting neurological function.

Use this code for follow-up encounters where a patient is being treated for or monitored for a stenosis caused by a nervous system implant. This includes situations where the patient is undergoing further evaluation, management, or treatment for the stenotic complication after the initial treatment of the complication.

• Requires an external cause code (e.g., Y70-Y82) to identify the specific type of nervous system device.
• Do not use for initial encounters for the complication; this specific code is for subsequent encounters only.
• Always sequence this complication code first, followed by codes for the specific type of stenosis and any associated neurological deficits.