CPT 36600: Arterial puncture
What this code means, what it should cost, and how to dispute an overcharge.
Fair Price Reference
What is CPT 36600?
CPT 36600 (Arterial puncture) is a procedure billing code defined by the American Medical Association. It's used to bill your insurance or you directly for this service.
What CPT 36600 should cost
The Centers for Medicare & Medicaid Services (CMS) pays approximately $12 for CPT 36600 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 ($14–$22). Hospital chargemaster prices for CPT 36600 often range from $40 to $200 — a markup of 3.3x to 16.7x over Medicare.
Common overcharges on CPT 36600
Billing a procedure code AND an E&M code for the same encounter without modifier 25 justification. Billing component codes alongside comprehensive codes (e.g., individual biopsy codes alongside the primary procedure).
About Procedure billing
Procedure codes are often bundled with evaluation & management codes through NCCI edits. Improper unbundling is one of the most financially significant billing errors.
Check NCCI edits for the procedure code pairs. If two codes should not be billed together, demand adjustment to the comprehensive code only.
How to dispute a CPT 36600 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 ($18), 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.
Got CPT 36600 on your bill?
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