Specialty
Neurology billing services
Neurology billing services turn on tests and drugs more than on visits: nerve conduction studies counted per nerve and paired with needle EMG, EEG and sleep studies split into professional and technical components, botulinum toxin claims that need the wastage modifier and a headache diary behind them, and office visits that run long enough to reach the prolonged service add-on.
See where claims are getting stuck. No patient data needed.
Each of those has a payer edit waiting for it. Remitwright gives neurology practices a dedicated biller who checks units against the contractor's limits before release, tracks authorizations for the drugs and studies that need them, and works denials by cause, serving practices remotely.
Neurology billing is one of Remitwright's specialty billing services, each set out with its own code families, denial reasons and payer rules.
Last reviewed by the Remitwright billing team. Editorial policy
- 64612-64617
- 95800-95811
- 95812-95822
Denials
Why neurology claims get denied
The reasons that come up most on neurology remittances, with the usual cause and the fix. Code explanations are our own; the official list is maintained by X12.
| Code | Reason | Usual cause | The fix |
|---|---|---|---|
| CO-50 | Not medically necessary | Nerve conduction studies billed without needle EMG for anything other than a high-probability carpal tunnel case, or a rule-out diagnosis on the claim | Diagnosis and study combination checked against the contractor's coverage policy before release, and the ordering note read when the diagnosis is a symptom |
| CO-151 | Units exceed what the payer allows | A nerve conduction code reported more than once for the same nerve, two units of the non-extremity EMG add-on, or a second guidance code for the chemodenervation session | Units built from the nerve list and muscle list in the report, with the per-nerve and per-session ceilings in the scrubber |
| CO-97 | Bundled, not separately payable | A routine EEG billed with polysomnography on the same date without a separate encounter, or guidance billed in addition to chemodenervation with no modifier logic | NCCI procedure-to-procedure edits run before submission, with the modifier added only when the record shows a separate encounter |
| CO-16 | Claim lacks information | Botulinum toxin from a single-dose vial billed to Medicare without JW or JZ, or with units that do not match the dose and wastage in the procedure note | Drug charge capture that records units given and discarded, with the modifier rule applied per payer |
| CO-197 | Authorization absent or expired | Botulinum toxin, long-term EEG monitoring, sleep studies or advanced imaging performed under a commercial or Medicare Advantage plan before approval, or after the approved window closed | An authorization matrix by payer and service, with the number and dates attached to the claim before the procedure is scheduled |
| CO-4 | Procedure inconsistent with the modifier | Modifier 26 on a study the practice performed in full, TC on a global service, or the prolonged add-on billed with a base code it does not attach to | Component billing set per site and per payer, and the prolonged code allowed only with the top-level visit and the time threshold met |
Codes
Common neurology codes and modifiers
Code families by number with our own one-line explanations. CPT descriptors belong to the AMA and are not reproduced here.
| Codes | What the family covers |
|---|---|
| 64612-64617, 64642-64647, 95873, 95874, J0585-J0588 | Chemodenervation by body region, the single guidance code allowed per session, and the botulinum toxin products billed in units with the discarded amount on its own line |
| 95800-95811 | Sleep testing and polysomnography, including home sleep tests and the multiple sleep latency test, with polysomnography the only one that includes sleep staging |
| 95812-95822, 95700-95726 | Routine EEG by duration and state, and the long-term monitoring codes for continuous EEG with or without video, each with a professional and a technical side |
| 95885-95887, 95860-95870 | Needle EMG: the add-on codes when EMG is done in the same session as nerve conduction, and the standalone codes when it is not |
| 95907-95913 | Nerve conduction studies, coded by how many nerves were tested in the session, with each nerve counted once however many sites were stimulated |
| 96365-96368, 96372, J-codes | Infusions and injections given in the office, such as migraine prevention and multiple sclerosis therapies, billed with the drug code in units from the documented dose |
| 99202-99215, G2212 | Office visits leveled on medical decision making or total time, with Medicare's prolonged service add-on once the visit runs past the top level's time range |
Modifiers that matter
- 26 and TC
- Professional and technical components of EEG, nerve conduction, EMG and sleep studies: 26 when your neurologist reads a study someone else recorded, TC when your practice owns the equipment and another physician interprets, no modifier when you do both.
- JW and JZ
- Medicare requires one of them on every claim for a drug from a single-dose container: JW on a separate line for the discarded units, JZ when nothing was discarded. Botulinum toxin vials are the usual case in neurology.
- 25
- A separately documented visit on the same day as chemodenervation, an EMG or an infusion, where the visit addressed something beyond the procedure's own pre-service work.
- 59, XE or XU
- A complete diagnostic EEG at a separate encounter on the same date as polysomnography, or continuous EEG monitoring distinct from the EEG inside a sleep study; without the modifier the EEG is bundled.
- 95 with POS 02 or 10
- Telehealth follow-ups by audio and video, with the place of service telling the payer whether the patient was at home.
Payers
Payer notes
- MedicareThe Medicare contractor coverage policy for nerve conduction studies and EMG (L35897) states that both tests are required for a clinical diagnosis of peripheral nervous system disorders, with the one exception of nerve conduction alone for carpal tunnel syndrome with a high pre-test probability; each nerve conduction code is paid once per nerve regardless of the number of sites, and a rule-out diagnosis is typically not acceptable.1
- MedicareContractor policy for botulinum toxins (L35172) defines chronic migraine as at least 15 headache days a month with at least 8 migraine days lasting at least 4 hours, present for at least 3 months; limits administration to no more frequently than every 12 weeks regardless of diagnosis; and expects objective clinical scales documented at baseline and follow-up to support repeat injections.2
- MedicareThe NCCI policy manual bundles EEG into polysomnography unless a complete diagnostic EEG is performed at a separate encounter on the same date with modifier 59 or XE, allows only one guidance code (95873 or 95874) with one unit per chemodenervation session regardless of the muscles treated, and sets the unit limit for the non-extremity EMG add-on 95887 at one.3
- MedicareCMS requires the JW modifier for discarded amounts from single-dose containers or single-use packages that are separately payable under Part B, and the JZ modifier on all such claims when there are no discarded amounts; the discarded units reported with JW are the data the manufacturer refund program is calculated from.4
- MedicareContractor policy for polysomnography (L36593) requires accreditation for sleep disorder clinics, covers home sleep tests for obstructive sleep apnea only, excludes them for patients with moderate to severe pulmonary disease, neuromuscular disease affecting respiration or heart failure, and generally considers one night adequate to document sleep apnea.5
- MedicareUnder the E/M services guide, the prolonged office visit add-on G2212 is reported only when the level was chosen on time and the total time passes the top level's range: 99215 with one unit at 69 to 83 minutes and 99205 with one unit at 89 to 103 minutes, each further unit for another 15 minutes, with all time counted on the date of service.6
- MedicareMedicare.gov states that through December 31, 2027 Medicare covers telehealth services from anywhere in the United States including the patient's home, with patients paying the same amount as for an in-person visit for most services; the narrower location rules that apply outside that extension are set out in the CMS telehealth booklet.7
- Commercial plans and MedicaidNCCI procedure-to-procedure and medically unlikely edits are built for Medicare Part B and Medicaid runs its own NCCI program; most commercial plans apply the same or stricter edit sets, so a study, a guidance code and a visit on the same day pass only with the modifiers and documentation the edit expects.8
Authorizations
Medicare fee-for-service does not require prior authorization for office neurology services, so the authorization work sits with commercial plans, Medicare Advantage and Medicaid managed care. Botulinum toxin usually needs two approvals, one for the drug (buy-and-bill under the medical benefit or dispensed by a specialty pharmacy) and one for the procedure; long-term EEG monitoring, sleep studies, MRI and CT, infused multiple sclerosis and migraine drugs and neurostimulator procedures are the other common gates. Your biller keeps the matrix by payer and service, requests approval when the order is placed, records the approved units and dates, and renews before a repeat injection cycle rather than after the denial.
Documentation traps
- A nerve conduction report that does not list each nerve studied by name, so units cannot be defended when the contractor asks why a code was billed more than once
- Needle EMG performed with nerve conduction but documented as a single study, leaving the add-on codes without their own findings
- Headache diaries missing from the chart when botulinum toxin is billed for chronic migraine, when the coverage policy turns on headache days per month and an objective scale at baseline and follow-up
- Vial size, units injected and units discarded not recorded in the procedure note, which is the whole basis for the JW line
- EEG and sleep study interpretations without a signed, dated report, so the professional component is paid and then recouped
- Total time not written on the date of service for visits leveled on time, which is the first thing checked when the prolonged add-on appears
What a specialist checks
Specialist or generalist for neurology billing?
A generalist biller can enter a neurology claim. Whether it pays turns on three things specific to neurology billing, and a specialty-aware biller checks each one.
Code families
Each family billed with what the chart has to show for it.
- 64612-64617, 64642-64647, 95873, 95874, J0585-J0588
- 95800-95811
- 95812-95822, 95700-95726
Modifiers
Applied only where the note supports them, line by line.
- 26 and TC
- JW and JZ
- 25
If you are moving from another billing company or an in-house biller, switching billing companies follows a plan: the old and new processes run side by side until the new one is proven, and every login and every neurology claim stays in your name.
What we handle
What we handle for neurology practices
- Prior authorizationAuths requested, tracked, attached to claims
- Medical codingCPT, ICD-10 and modifiers assigned correctly
- Claim submissionScrubbed, submitted and tracked to acceptance
- Denial managementEvery denial read, worked and appealed
- Claim appealsWritten appeals, right level, right deadline
- Underpayment recoveryShort payments found and disputed
A dedicated biller with named cover, working inside your system and reporting to you on one written page. How it works sets out the five stages.
Software
Systems neurology practices usually run
Your biller works inside your system as a user you create. All the systems we work in.
Questions
Questions about neurology billing
Why do our nerve conduction studies get denied when we bill them without an EMG?
Because the Medicare contractor policy expects both tests for a diagnosis of a peripheral nerve disorder. The one carve-out is carpal tunnel syndrome with a high pre-test probability, where nerve conduction alone is acceptable. Commercial plans tend to copy the same logic. If the neurologist decided EMG was not needed, the note has to say why, and the diagnosis code has to be a condition, not a rule-out.
How many units can we bill for nerve conduction studies?
The code is chosen by the number of nerves tested in the session, and each nerve counts once no matter how many sites were stimulated or which method was used. The report has to name the nerves. Your biller builds the unit count from that list rather than from the number of tracings.
What do we need in the chart for botulinum toxin injections?
For chronic migraine, a diary or record showing the headache days and migraine days per month over the qualifying period, a baseline score on an objective scale, and the score at follow-up. For every injection, the product, the vial size, the units injected by muscle, the units discarded, and the date of the last injection so the interval is visible. The claim carries the drug code in units with JW or JZ, the chemodenervation code by region, and at most one guidance code.
Can we bill an EEG on the same day as a sleep study?
Only when a complete diagnostic EEG was performed at a separate encounter in the usual way, with modifier 59 or XE on the EEG code. The EEG channels recorded for sleep staging inside the polysomnogram are part of the sleep study and cannot be billed on their own.
When does modifier 26 apply to our studies?
When your neurologist interprets a study that another facility recorded and billed. If your practice owns the equipment, employs the technologist and reads the study, you bill the global code with no modifier. If you record and someone else reads, you bill TC. Getting this wrong in either direction creates a denial or an overpayment that comes back later.
Can we bill prolonged services for a long new patient visit?
With Medicare, yes, when the level was chosen on time and the total time on the date of service passes the top of the 99205 or 99215 range by the margin the E/M guide sets; the add-on is G2212, in 15-minute units, listed with the base visit. Many commercial plans want 99417 with a different threshold instead. The time has to be written in the note for that date.
Do telehealth follow-ups for seizure or migraine patients get paid?
Under Medicare, telehealth from the patient's home is covered through December 31, 2027 under the current extension, with the same cost sharing as an in-person visit for most services. Bill the visit code with modifier 95 and the place of service that shows where the patient was. Commercial plans each have their own list and modifier, so your biller keeps the rule per payer.
What do you need from a neurology practice to start?
A signed BAA, a user for your biller in your EHR, practice management system and clearinghouse, your payer contracts and fee schedules, the list of studies you perform in-house versus read only, your drug purchasing records for buy-and-bill products, and your current authorization log. Bring an aging report and a denial report to the review if you have them.
Next step
See where your neurology claims are getting stuck.
Three quick questions. No patient data. A billing specialist reads every request and replies in writing.
- Three questions, about two minutes
- No patient data, no software to buy
- A written reply from a biller, not a sales deck
You answer three questions
A billing specialist reads them
A written reply by email
Prefer email? sales@remitwright.com
Request received
Thanks. Your review request is in.
Reference . Quote it if you write to us about this request.
- A billing specialist reads your answers and replies by email.
- If a look at real claims makes sense, we agree read-only access under a BAA first.
- You get a written summary of what is worth working and what it would take. No commitment.
While you wait: see the sample weekly report or read how switching works. You can also download the sample weekly report (PDF).