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OUR SPECIALTY

Intraoperative neuromonitoring & ambulatory EEG

This is not a service line we added. It is what the firm was built around, and it is most of what we do all day. Here is exactly how we work it (so you can judge us on method, not adjectives).

ON THIS PAGE
01  The code set, and where it goes wrong 02  What a clean claim needs 03  Negotiation and federal IDR 04  Ambulatory & long-term EEG 05  Working with us
01 · THE CODE SET

Two claims, same surgery, very different money.

IONM is billed as a base study plus a monitoring code, and the monitoring code depends on where the professional was and how many rooms they covered. Those distinctions are where most of the lost revenue in this specialty lives.

CODE
WHAT IT COVERS
WHERE IT GOES WRONG
95940
Monitoring inside the operating room, one-on-one, personal attendance: billed per 15 minutes.
Time has to be documented and attributable to one patient. Overlapping units across rooms is the fastest way to a refund demand.
95941
Remote or non-continuous oversight, or more than one case at a time: billed per hour.
Commercial payers accept it; Medicare does not. Sending 95941 to a Medicare payer is a denial you generated yourself.
G0453
Medicare's equivalent for remote monitoring: billed per 15 minutes, not per hour.
The unit change trips people up constantly. Same service, different payer, different math entirely.
95925-95927
Somatosensory evoked potentials: upper limbs, lower limbs, or trunk and head.
The base studies are what make the monitoring payable. Omit them and the monitoring code has nothing to attach to.
95928-95929
Central motor evoked potentials by transcranial stimulation: upper or lower limbs.
Frequently denied as investigational by plan policy. Winnable, but only with the plan language in hand.
95938-95939
Combined upper and lower limb studies, reported as a single code.
Billing the two separate codes instead of the combined one reads as unbundling. Payers catch it and claw it back.

Code descriptions are summarized in plain language for orientation and are not a substitute for the current CPT and HCPCS code sets or your payers' policies. Definitions and payment rules change annually.

02 · BEFORE IT GOES OUT

A clean IONM claim is assembled, not submitted.

Six documents have to agree with each other before anything is transmitted. When they don't, we go get the missing piece; we don't send it and hope. It is slower on day one and dramatically faster to payment.

01
The operative note
Procedure, levels, approach, and that monitoring was requested and used.
02
The technologist's log
Setup, modalities run, start and stop times, and every alert with the response to it.
03
The oversight physician's report
Signed, timed, and consistent with the monitoring code being billed.
04
Baselines and trend data
Evidence the service was continuous, interpreted live, and clinically meaningful.
05
Attendance and coverage record
Who was in the room, who was remote, and how many cases they held at once.
06
Eligibility, benefits, and plan type
Self-funded or fully insured, and whether federal protections apply: checked before the claim, not after.
03 · NEGOTIATION & FEDERAL IDR

The part most billers quietly skip.

Under the No Surprises Act, out-of-network monitoring at an in-network facility can no longer be balance billed. What replaced it is a structured federal process with real deadlines. It takes staff time and discipline, which is precisely why so much of it goes unworked, and why it is still worth money to the practices that do work it.

01
Initial payment or denial
Payer response window

The payer's first move sets the whole clock. We date-stamp it, confirm whether federal protections apply to that plan, and calendar every downstream deadline the same day.

02
Open negotiation
Fixed window, business days

A formal notice, a supported number, and an actual negotiation: not a phone call and a shrug. Settling here is faster and avoids arbitration fees entirely, so this is where we push hardest.

03
Initiating IDR
Narrow window after negotiation closes

A short, unforgiving deadline measured in business days. This is the single most common place practices lose otherwise winnable money: not by losing, but by being late.

04
Batching & entity selection
Where fee strategy is decided

Similar claims can sometimes be bundled into one dispute, which changes the economics completely. Knowing when batching is allowed (and when it will get your case rejected) is most of the skill.

05
The offer package
One number, one chance

Each side submits a single offer with supporting evidence: complexity of the case, training required, market rates, prior contracted history. An offer without a story behind it loses to one that has one.

06
Determination
Binding, winner-take-all

The arbiter picks one offer outright: there is no meeting in the middle. The losing side pays the fee, which is exactly why we only take forward the cases we think carry.

Timeframes and eligibility under the federal dispute process are set by regulation and have been subject to ongoing rulemaking and litigation. We track current requirements per claim and per plan; nothing on this page should be relied on as legal advice.

04 · AMBULATORY & LONG-TERM EEG

Long studies, split billing, and a lot of ways to lose a day.

Ambulatory EEG is billed on a different logic from IONM: recording duration, whether the study was video, and whether it was reviewed intermittently or continuously all change the code. The technical and professional components are frequently performed by different entities, which means two claims that have to reconcile with each other.

Duration tiers billed correctly. Recording time drives the code. Rounding it the wrong way is either lost revenue or a refund request.

Technical and professional split reconciled. Both halves tracked together so one doesn't sit unpaid behind the other.

Prior authorization handled up front. Many plans require it for extended studies. We confirm before the electrodes go on.

Medical necessity documented to plan policy. Seizure history, prior workup, and the clinical question the study answers.

ALSO BILLED HERE
Sleep studies & sleep lab billing
Out-of-network surgical claims
Nurse practitioner & PA billing
ERISA & self-funded plan appeals
Multi-state payer claims

If your service line isn't listed, ask. The honest answer is sometimes no. And we'd rather tell you that than learn on your revenue.

05 · WORKING WITH US

Four weeks from first call to fully worked.

WEEK ONE

Claims review

You send us a sample of denials and aged claims. We come back with what went wrong, what's recoverable, and what isn't.

WEEK TWO

Scope & agreement

A clear scope, a clear rate, and a business associate agreement. No long lock-ins, no surprise line items.

WEEK THREE

Onboarding

System access, clearinghouse setup, credentialing check, and a walkthrough of how your documentation reaches us.

WEEK FOUR

Live, plus back-work

New claims go out clean while we work the backlog in parallel. First full report at the end of month one.

Send us thirty denied claims. We'll tell you what they're actually worth.

No cost and no commitment. If your current biller is doing fine, we'll say so.

Request a claims review 972-412-5299
HnP Claim Care

Specialist revenue cycle management for intraoperative neuromonitoring, ambulatory EEG, and out-of-network surgical claims.

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972-412-5299 info@hnpcs.net
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