Summary & Overview
CPT 61026: Ventricular Needle Access for Diagnostic or Therapeutic CSF Procedures
CPT code 61026 covers needle access to a cerebral ventricle to inject diagnostic or therapeutic agents, measure intracranial pressure, remove excess cerebrospinal fluid, or collect cerebrospinal fluid for laboratory analysis. This targeted ventricular access procedure is an important tool in the diagnosis and management of neurological conditions such as central nervous system infection, hydrocephalus, and intracranial pressure abnormalities. Nationwide, accurate coding of this service affects clinical documentation, inpatient and outpatient billing workflows, and case-mix reporting in neurosurgical care.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise summary of clinical context, typical sites of service, and common modifiers associated with reporting this procedure. The publication provides benchmarks and coding guidance context relevant to billing professionals and policy analysts, including how the procedure is characterized for reimbursement and quality measurement. It also highlights policy and coverage considerations that influence prior authorization, site-of-service determinations, and documentation standards. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 61026 describes a neurosurgical ventricular access procedure in which a provider inserts a needle into one of the brain’s ventricles to inject a diagnostic or therapeutic agent. The service may be performed through a previously created burr hole, the fontanelle, a coronal suture, or via an existing internal ventricular drain. Indications include measuring intracranial pressure, removing excess cerebrospinal fluid, collecting fluid samples for diagnosis (for example, to evaluate suspected meningitis), or delivering intraventricular medications.
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Service type: Procedural neurosurgical ventricular access for diagnostic or therapeutic cerebrospinal fluid manipulation
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Typical site of service: Inpatient hospital or ambulatory surgical setting where neurosurgical procedures and cerebrospinal fluid access are performed (e.g., operating room, procedure suite, or intensive care unit)
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient presents to the neurosurgery service with fever, headache, neck stiffness, and altered mental status. The admitting team suspects central nervous system infection after recent placement of an external ventricular drain for hydrocephalus following subarachnoid hemorrhage. The neurosurgeon performs ventricular needle aspiration and injection through an existing burr hole or the external ventricular drain to obtain cerebrospinal fluid (CSF) for culture and cell count, relieve elevated intracranial pressure, and instill intraventricular antibiotics if indicated. The clinical workflow includes verification of prior cranial access (burr hole or drain), informed consent, sterile preparation at the bedside or in the operating room, image guidance or landmark confirmation as needed, placement of a ventricular needle through the existing access, withdrawal of CSF and/or measurement of opening pressure, possible instillation of medication, documentation of volumes and pressures, and handoff to the critical care team for post-procedure monitoring.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Unusual procedural services (modifier -24 indicates unrelated E/M; 11 is CMS internal — use 22 for increased procedural services) | Not typically used; omitted if not applicable. |