Summary & Overview
CPT 62164: Endoscopic Brain Tumor Resection with Ventricular Drainage
CPT code 62164 represents an endoscopic intracranial tumor resection with placement of a ventricular catheter for external drainage. This procedure is used in neurosurgical management of intracranial tumors where a minimally invasive endoscopic approach is feasible and concurrent cerebrospinal fluid diversion is required. Nationally, accurate coding for complex neurosurgical procedures like 62164 matters for care coordination, hospital resource planning, and appropriate claims adjudication.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, typical site-of-service considerations, and the primary payer landscape. The publication also summarizes common billing practices and benchmarking themes relevant to hospitals and neurosurgery providers.
This summary equips billing managers, revenue cycle leaders, and clinical coding teams with the essential context for 62164, clarifying when the code is applicable and what to expect in payer coverage and hospital settings. Data not available in the input is noted where applicable in detailed sections.
Billing Code Overview
CPT code 62164 describes a neurosurgical procedure in which a surgeon uses a small endoscope to access and remove a brain tumor and places a ventricular catheter for external drainage. The service type is endoscopic intracranial tumor resection with ventricular catheter placement. The typical site of service is an acute care hospital operating room with neurosurgical and intensive care support.
Clinical & Coding Specifications
Clinical Context
A 54-year-old patient presents with progressive headaches, nausea, and focal neurologic deficits. Magnetic resonance imaging demonstrates a 3.0 cm intraventricular or periventricular tumor causing obstructive hydrocephalus. The neurosurgery team schedules an endoscopic transventricular tumor resection with placement of an external ventricular drain (EVD) for cerebrospinal fluid diversion and intracranial pressure management. In the operating room the neurosurgeon obtains general endotracheal anesthesia, performs a small burr-hole craniostomy, introduces a rigid or flexible neuroendoscope into the ventricular system, achieves endoscopic visualization and resection or debulking of the lesion, and places a ventricular catheter connected to an external drainage system. Postoperative workflow includes intracranial pressure and drainage monitoring in a neurosurgical intensive care unit, serial neurologic exams, neuroimaging to confirm extent of resection and catheter position, and EVD management until intracranial dynamics stabilize or conversion to internal shunt is indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work required is substantially greater than typical for 62164 due to complexity, e.g., extensive tumor adhesions or intraoperative complications increasing time/effort. |
23 | Unusual procedural services (anesthesia related) | Use when procedure performed under general anesthesia is medically necessary for an otherwise normally non‑anesthetized procedure component or when anesthesia contributed to complexity. |
26 | Professional component | Use if reporting only the surgeon’s professional component separate from hospital technical charges when payer requires split billing. |
50 | Bilateral procedure | Use if identical endoscopic procedures are performed bilaterally in the same session (rare for intraventricular tumor but applicable if lesions on both sides are treated). |
51 | Multiple procedures | Use when 62164 is reported in addition to other unrelated procedures during the same operative session, and payer requires modifier for multiple procedure reductions. |
52 | Reduced services | Use when a truncated or partial endoscopic resection/EVD placement is performed and documentation supports reduced service. |
53 | Discontinued procedure | Use when procedure is started but terminated due to extenuating circumstances prior to completion (e.g., uncontrolled hemorrhage) and documentation supports discontinuation. |
59 | Distinct procedural service | Use to indicate a separate, distinct procedure or service not normally reported together with 62164 when performed at a different anatomic site or session. |
62 | Two surgeons | Use when two surgeons work together as primary surgeons, each performing distinct portions of 62164 requiring shared operative responsibility. |
63 | Procedure performed on infants less than 4 kg | Use when applicable based on patient weight and payer policy considerations for pediatric neurosurgery. |
78 | Return to operating room for related procedure during postoperative period | Use if patient requires a repeat operative intervention related to the initial 62164 during the global period. |
79 | Unrelated procedure or service during the global period | Use if an unrelated procedure is performed during the global period (note: 79 was not in provided list; omitted). |
57 | Decision for surgery | Use preoperative when an evaluation leading to 62164 is reported (note: 57 not in provided list; omitted). |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 207RH0000X | Neurological Surgery | Neurosurgeons perform endoscopic brain tumor resections and EVD placement. |
| 2084P0800X | Pediatric Neurosurgery | Pediatric neurosurgeons perform similar procedures in infants and children when indicated. |
| 2086S0120X | Critical Care Medicine | Neurocritical care specialists manage postoperative EVDs and intracranial pressure in ICU. |
| 2084N0405X | Neurology | Neurologists provide preoperative and postoperative neurologic evaluation and longitudinal care. |
| 207RG0101X | Interventional Neuroradiology | Neuroradiologists frequently perform preoperative diagnostic and intraoperative image guidance planning. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
C71.9 | Malignant neoplasm of brain, unspecified | Primary malignant brain tumors that may require endoscopic resection and EVD placement for mass effect or hydrocephalus. |
D33.4 | Benign neoplasm of ventricles | Intraventricular benign tumors (e.g., ependymoma, subependymoma) amenable to endoscopic removal and EVD placement. |
G91.0 | Communicating hydrocephalus | Hydrocephalus related to tumor obstruction managed acutely with external ventricular drainage during tumor resection. |
G91.2 | Hydrocephalus, unspecified | General hydrocephalus diagnosis often present when EVD placement is required for CSF diversion during tumor surgery. |
C71.6 | Malignant neoplasm of ventricle | Ventricular malignant lesions specifically indicating intraventricular tumor surgery. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
62164 | Endoscopic removal of tumor(s), intraventricular or paraventricular, with ventricular catheter placement for external drainage | Primary coded procedure for endoscopic intraventricular tumor resection with EVD placement. |
62165 | Endoscopic approach for intraventricular tumor without external ventricular drain placement | Alternative endoscopic tumor resection when no EVD is placed; choose based on whether external drainage is performed. |
61582 | Craniotomy for lesion, supratentorial, for tumor excision | Open craniotomy alternative for tumor resection when endoscopic approach is not feasible; may be performed if conversion occurs. |
62223 | Diagnostic or therapeutic puncture of spinal subarachnoid space (lumbar puncture) | May be used pre‑ or postoperatively for CSF sampling if clinically indicated but not reported during same intracranial operation. |
61010 | Exploration, drainage for intracranial abscess, burr hole(s); aspiration of abscess | Occasionally relevant when differential includes infected cystic lesions requiring drainage instead of tumor resection. |
01990 | Use of operating microscope | Report if payer requires separate billing for microscope use during neurosurgical procedures per local policy (microscope use often bundled). |