Code 63407 was defined as: "Incision of cerebral subarachnoid space, drainage of cerebral cyst (including placement of catheter or shunt when performed), supratentorial." Key takeaway: Always check your CPT edition. Many payers now map this to 62190 (Creation of shunt; subarachnoid/subdural) or 62192 (with laminectomy). 2. Clinical Procedure (What the surgeon does) A neurosurgeon performs this for intracranial cysts (e.g., arachnoid cysts, colloid cysts, epidermoid cysts) causing mass effect, hydrocephalus, or seizures.

Run a test claim with your top commercial payer’s coding hotline or consult a certified neurosurgery coder.

This is an excellent question, as is a highly specialized and less common code.