Summary & Overview
CPT 62329: Lumbar Puncture (Image-Guided CSF Withdrawal)
CPT code 62329 denotes an image-guided lumbar puncture (spinal tap) in which a needle or catheter is placed into the subarachnoid space to withdraw cerebrospinal fluid for diagnostic or therapeutic purposes. This procedure is clinically important across neurology, neurosurgery, and emergency medicine because it can both diagnose central nervous system infections, hemorrhage, and inflammatory conditions and relieve elevated intracranial pressure. Nationally, accurate coding for lumbar puncture impacts clinical documentation, utilization monitoring, and payment for procedures that require imaging guidance.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise summary of how 62329 is characterized in clinical practice, common sites of service, and the role of imaging guidance. The publication outlines billing considerations, typical clinical indications, and relevant modifiers and billing relationships where available. It also highlights benchmarks and policy updates relevant to imaging-guided lumbar puncture, and provides context for coding consistency and payer coverage patterns. Data not available in the input is identified explicitly.
Billing Code Overview
CPT code 62329 describes insertion of a hollow needle or catheter into the subarachnoid space to withdraw cerebrospinal fluid (CSF), commonly known as a lumbar puncture (spinal tap). The procedure is performed under fluoroscopic or CT imaging guidance when indicated to improve accuracy and safety.
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Service type: Diagnostic and therapeutic CSF removal (lumbar puncture) performed with image guidance
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Typical site of service: Hospital inpatient or outpatient departments, ambulatory surgery centers, and imaging suites where fluoroscopy or CT guidance is available
Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes.
Clinical & Coding Specifications
Clinical Context
A 45-year-old patient presents to the hospital emergency department with acute severe headache, nausea, and photophobia. Neurologic exam shows nuchal rigidity and concern for meningitis or subarachnoid hemorrhage. After neuroimaging (non-contrast head CT) to exclude a large intracranial bleed, the neurology team requests cerebrospinal fluid (CSF) sampling. The procedure performed is a diagnostic lumbar puncture (spinal tap) with placement of a hollow spinal needle into the lumbar subarachnoid space under fluoroscopic guidance to withdraw CSF for analysis. The clinical workflow includes pre-procedure consent and coagulation review, positioning the patient in lateral decubitus or sitting position, sterile preparation, local anesthesia, fluoroscopic localization of the appropriate lumbar level, needle insertion with confirmation of CSF return, collection of specimens, removal of needle, and post-procedure monitoring for headache or neurologic changes. Typical sites of service are the hospital inpatient unit, emergency department, or an outpatient radiology/interventional suite when image guidance is used.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing only the physician professional portion if technical component billed separately |
50 |