CPT 62270: Lumbar puncture (spinal tap)
What this code means, what it should cost, and how to dispute an overcharge.
Fair Price Reference
What is CPT 62270?
A lumbar puncture (spinal tap) — a needle is inserted into the lower spine to collect cerebrospinal fluid (CSF) for analysis. Used to diagnose meningitis, multiple sclerosis, and other neurological conditions.
Typical setting: Hospital or outpatient clinic.
What CPT 62270 should cost
The Centers for Medicare & Medicaid Services (CMS) pays approximately $130 for CPT 62270 under the 2025 Physician Fee Schedule. This is what the federal government has determined is a reasonable payment for this service.
Private insurance typically pays 1.2–1.8x Medicare rates ($156–$234). Hospital chargemaster prices for CPT 62270 often range from $300 to $2000 — a markup of 2.3x to 15.4x over Medicare.
Common overcharges on CPT 62270
Hospital facility fees for lumbar puncture can inflate the bill 5–10x above the physician's professional fee. Also watch for separate charges for fluoroscopic guidance (77003) that may be bundled into the procedure code.
About Neurology billing
Nerve conduction studies (NCS) and electromyography (EMG) are among the most overcharged diagnostic tests. The combination study — NCS + needle EMG — is routinely billed at 5–10× Medicare rates, and improper unbundling of EMG components is extremely common.
Request the NCS/EMG report — it documents every nerve tested and every muscle needled. Count the nerves to verify the NCS code tier (95907–95913). Confirm that needle EMG add-on codes (95885/95886) have a qualifying primary NCS code on the same claim.
How to dispute a CPT 62270 overcharge
- Request the itemized bill. You are entitled to a detailed line-by-line bill showing every CPT code billed. Ask in writing.
- Compare to Medicare allowable. If the charge exceeds 150% of Medicare ($195), you have grounds to dispute.
- Request documentation. For E&M codes, ask for the visit note. For procedures, ask for the operative report. The documentation must justify the code billed.
- Send a formal dispute letter. Cite the specific discrepancy between the documentation and the code. Reference Medicare rates and NCCI edits where applicable.
- Follow up in writing. Give the provider 30 days to respond. If they don't, escalate to the state attorney general and insurance commissioner.
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