CPT 00840: Anesthesia, peritoneal
What this code means, what it should cost, and how to dispute an overcharge.
Fair Price Reference
What is CPT 00840?
Anesthesia for lower abdominal / peritoneal procedures. Billed in 15-minute time units.
Typical setting: Hospital OR or surgery center.
What CPT 00840 should cost
The Centers for Medicare & Medicaid Services (CMS) pays approximately $712 for CPT 00840 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 ($854–$1282). Hospital chargemaster prices for CPT 00840 often range from $1200 to $5000 — a markup of 1.7x to 7x over Medicare.
Common overcharges on CPT 00840
Anesthesia billing is based on base units + time units + modifiers. Verify the total time matches the actual anesthesia record. Inflated time units are the most common overcharge.
About Anesthesia billing
Anesthesia is billed by time units — and time units are the most commonly inflated component of anesthesia charges.
Request the anesthesia record — it documents actual start/stop times. Verify billed units match documented time. Out-of-network anesthesia billing is illegal under the No Surprises Act.
How to dispute a CPT 00840 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 ($1068), 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 00840 on your bill?
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