Specialty
Speech therapy billing services
Speech therapy billing services turn evaluations, treatment sessions and swallowing work into claims that carry the GN modifier, keep untimed session codes and timed cognitive codes apart, and stay inside a plan of care a physician has certified on time.
See where claims are getting stuck. No patient data needed.
Remitwright gives speech-language pathology practices a dedicated biller who tracks the KX threshold Medicare shares between physical therapy and speech, keeps certification and progress report dates on a calendar, records each plan's rule on developmental and school-age therapy before the first visit, and works every denial back to its cause.
Speech therapy 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
- 92507
- 92521-92524
- 92526
Denials
Why speech therapy claims get denied
The reasons that come up most on speech therapy 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-4 | Procedure inconsistent with the modifier | GN missing, GP left on speech lines by a multi-discipline clinic's template, or a distinct-service modifier on a pair this payer never unbundles | A scrubber rule that speech codes carry GN only, with the payer's modifier preferences recorded, and the corrected claim sent as a replacement rather than a new claim |
| CO-50 | Not medically necessary | Plan of care not certified or lapsed, progress report missing at the interval, or a developmental diagnosis with no functional goals and no medical condition the plan recognizes | Certification and progress report dates on a calendar, claims past the certification date held until it is signed, and the plan written to the payer's criteria with measurable functional goals |
| CO-119 | Benefit maximum reached | Visit limits exhausted without anyone counting, often because the plan pools speech with physical and occupational therapy in one allowance | The limit and the pooling rule recorded at eligibility, rechecked monthly, and the self-pay conversation held before the capped visit, not after |
| CO-197 | Authorization absent or exceeded | Visits beyond the authorized count or end date, a renewal that needed a re-evaluation nobody scheduled, or a habilitative benefit that required authorization from the first visit | Authorized visits and dates on the schedule with a countdown, and the renewal requested before the last authorized visit with the progress summary and re-evaluation the plan asks for |
| CO-97 | Bundled, not separately payable | Speech treatment and swallowing treatment on one date without a distinct-service modifier, or the evaluation and treatment billed together where the payer pairs them | NCCI edits run before release, with the distinct-service modifier used only when the note shows separate time and a separate purpose |
| CO-151 | Units exceed what the payer allows | An untimed session code billed as two units for a long visit, or cognitive intervention minutes converted to units more generously than the payer counts | Untimed codes locked to one unit per day in charge entry, and timed minutes recorded and converted the way the payer's rule says |
| CO-B7 | Provider not enrolled for this service on that date | A speech-language pathologist not enrolled with Medicare in private practice before the first visit, or a clinician whose license or supervision status the plan does not recognize for the code | Enrollment and credentialing finished before the first visit under each plan, with supervision and licensure rules for each clinician type recorded per payer |
Codes
Common speech therapy 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 |
|---|---|
| 92507, 92508 | Individual and group treatment of speech, language, voice and communication; untimed session codes billed once per visit, which is where most of a speech practice's revenue sits |
| 92521-92524 | Evaluations of fluency, of speech sound production with or without language, and of voice and resonance; each is untimed, so one unit per code per day no matter how long it took |
| 92526 | Treatment of swallowing and feeding problems; untimed, billed once per day, and often paired with speech treatment in payer edits when both happen on the same date |
| 92597, 92605-92609 | Evaluation and training for speech-generating devices and other augmentative communication systems, some measured by the hour and some by the session |
| 92610, 92611, 92612 | The clinical swallowing evaluation and the speech-language pathologist's part of instrumental swallow studies done under fluoroscopy or with an endoscope |
| 96105, 96125 | Aphasia assessment and standardized cognitive performance testing billed per hour, including the interpretation and report time where the payer allows it |
| 97129, 97130 | Cognitive function intervention in 15-minute units, with one code for the first unit and another for each additional unit; the timed-code minute rules decide the count |
Modifiers that matter
- GN
- Required on every line delivered under a speech-language pathology plan of care for Medicare and the payers that follow it. Institutional lines with the speech revenue code may carry only GN, and the evaluation codes always carry it. A missing or wrong discipline modifier is a return, not a denial you can appeal.
- KX
- Added once the patient's combined physical therapy and speech spending for the year passes the threshold CMS publishes, as your attestation that the care is medically necessary and documented. On an institutional claim it goes on all of the speech lines or none of them.
- 95
- Audio-video telehealth, with the place of service the payer wants. Medicare uses it for outpatient therapy furnished remotely by hospital-employed speech-language pathologists, and every other payer sets its own rule for which speech codes it pays by video.
- 59 and the X modifiers
- Two codes the payer's edits pair, such as speech treatment and swallowing treatment on the same day, delivered as distinct services in separate time with a note that shows it. XU or XS where the payer prefers them to 59.
Payers
Payer notes
- MedicareThe KX modifier threshold for calendar year 2026 is $2,480 for physical therapy and speech-language pathology services combined, so a speech patient who also saw a physical therapist can cross it early in the year, and the targeted medical review threshold is $3,000 for the same combined category.1
- MedicareSpeech-language pathology services cover the diagnosis and treatment of speech and language disorders that cause communication disabilities and of swallowing disorders regardless of whether a communication disability is present; monthly re-evaluations during a rehabilitative program are part of the treatment and not separately billable, and a hearing screening done as part of an evaluation is not a separate service.3
- MedicareEvery therapy line carries the modifier for the discipline of the plan of care, GN for speech; institutional lines with the speech revenue code may carry only GN, evaluation codes must carry the discipline modifier, and an untimed code such as a speech evaluation is billed as one unit regardless of the minutes spent.2
- Medicare (telehealth)Outpatient therapy furnished by telehealth by speech-language pathologists employed by hospitals is reported with modifier 95, and professional telehealth claims carry place of service 02 when the patient is not at home and 10 when the patient is at home.4
- MedicaidChildren and young adults under 21 are entitled under EPSDT to all Medicaid-coverable, medically necessary services needed to correct and ameliorate conditions found on screening, which is the basis for pediatric speech coverage that is often broader than the adult benefit; the codes, modifiers and authorization process are set by each state.6
- Commercial plansMost apply the NCCI procedure-to-procedure edits and medically unlikely edits, so paired speech codes on one date need a distinct-service modifier with documentation to match, and each code has a daily unit ceiling the claim cannot exceed.5
Authorizations
Medicare does not require prior authorization for outpatient speech-language pathology, but it does require a plan of care certified by a physician or non-physician practitioner within 30 days of the first treatment, recertified at least every 90 days while treatment continues, and a progress report at least once every 10 treatment days; when the evaluation is the only service, the referral or order serves as the certification. Commercial plans and Medicaid managed care plans authorize in visits and dates, often from the first visit for children, and most want a re-evaluation and progress summary at renewal; some track habilitative and rehabilitative speech benefits separately. Your biller records the authorized visits and end date on the schedule, counts down as visits are booked, and requests renewal before the last authorized visit.
Documentation traps
- Plan of care not signed by the physician or non-physician practitioner within 30 days of the first treatment, or allowed to run past 90 days without a recertification, which puts every claim in between at risk of recoupment
- Evaluation-only visits with no referral or order in the chart; for Medicare that order is the certification that pays the evaluation
- Progress reports missing at the 10 treatment day interval, which turns a covered episode into a medical necessity denial at the next review
- Dysphagia treatment notes that do not trace back to the swallow evaluation findings and the diet-level goals in the plan
- Minutes recorded carefully for untimed session codes but not for the timed cognitive codes, which is the opposite of what the payer needs to see
- Group treatment notes without the number of participants and this patient's individual response
What a specialist checks
Specialist or generalist for speech therapy billing?
A generalist biller can enter a speech therapy claim. Whether it pays turns on three things specific to speech therapy billing, and a specialty-aware biller checks each one.
Code families
Each family billed with what the chart has to show for it.
- 92507, 92508
- 92521-92524
- 92526
Modifiers
Applied only where the note supports them, line by line.
- GN
- KX
- 95
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 speech therapy claim stays in your name.
What we handle
What we handle for speech therapy practices
- Eligibility verificationCoverage and benefits checked before visits
- Prior authorizationAuths requested, tracked, attached to claims
- Charge entryEvery encounter captured, nothing left unbilled
- Claim submissionScrubbed, submitted and tracked to acceptance
- Denial managementEvery denial read, worked and appealed
- CredentialingEnrollment, CAQH and PECOS kept current
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 speech therapy practices usually run
Your biller works inside your system as a user you create. All the systems we work in.
Questions
Questions about speech therapy billing
Do we need a physician referral to bill Medicare for speech therapy?
How does the KX threshold work when it is shared with physical therapy?
Is 92507 a timed code?
Can we bill speech treatment and swallowing treatment on the same day?
Does Medicare cover dysphagia treatment when the patient has no speech or language problem?
Does Medicaid cover speech therapy for children?
Can we bill speech therapy delivered by telehealth?
What do you need from a speech practice to start?
Next step
See where your speech therapy 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
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- 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).