Thrombosis due to nervous system prosth dev/grft, init

This code signifies the formation of a blood clot (thrombosis) that has developed as a direct complication of a prosthetic device, implant, or graft within the nervous system. This includes devices such as shunts, stimulators, or other neurosurgical implants. The "initial encounter" designation indicates that the patient is receiving active treatment for this new or acute condition.

Apply this code when a patient presents with symptoms of thrombosis (e.g., neurological deficits, pain, swelling) and diagnostic imaging confirms a clot directly associated with a nervous system implant. This is appropriate for the initial hospitalization or outpatient visit where the thrombosis is first diagnosed and treatment is initiated. Examples include a cerebral venous sinus thrombosis linked to a ventriculoperitoneal shunt or a deep vein thrombosis caused by a spinal cord stimulator lead.

• Ensure documentation clearly links the thrombosis to the nervous system prosthetic device.
• Confirm that this is the first time the patient is being treated for this specific thrombotic event.
• Do not use for thrombosis unrelated to the device or for subsequent encounters for the same condition.