CPT 95816: EEG, awake and asleep
What this code means, what it should cost, and how to dispute an overcharge.
Fair Price Reference
What is CPT 95816?
An electroencephalogram (EEG) recording brain wave patterns while awake and asleep. Used to diagnose epilepsy, seizure disorders, and other neurological conditions.
Typical setting: Hospital neurology lab or neurologist's office.
What CPT 95816 should cost
The Centers for Medicare & Medicaid Services (CMS) pays approximately $203 for CPT 95816 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 ($244–$365). Hospital chargemaster prices for CPT 95816 often range from $400 to $2000 — a markup of 2x to 9.9x over Medicare.
Common overcharges on CPT 95816
EEG is frequently billed alongside brain mapping (QEEG, 95957) even though brain mapping's clinical validity is disputed for many indications. Watch for unbundled EEG charges — a single session should generate one code, not multiple overlapping EEG codes.
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 95816 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 ($305), 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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