Rehab Medical Billing Services by Prospect Healthcare Solutions
Rehab medical billing services cover the coding, claims, denials and payments for rehabilitation care: physical therapy, occupational therapy, speech-language pathology and multidisciplinary rehab programs. Prospect Healthcare Solutions handles this full revenue cycle for outpatient rehab clinics, rehab agencies, hospital outpatient departments and therapy groups, so your clinicians can focus on helping patients recover.
Rehab billing is one of the most rule-heavy areas of healthcare. Timed units, discipline modifiers, shared therapy thresholds, plans of care and payer visit limits all apply, often to the same patient across three disciplines. We code every visit from the documentation, apply each payer’s rules and follow every claim until it is paid.
Prefer to talk? Call +1 (469) 935-4617.
Why Rehab Billing Is More Complex Than Other Specialties
A rehab patient may see a physical therapist, an occupational therapist and a speech-language pathologist in the same week, each with their own codes, modifiers and documentation. Payers track and limit these services differently.
Common challenges include:
- Timed codes and Medicare’s 8-minute rule
- GP, GO and GN modifiers by discipline
- KX threshold shared by PT and SLP, separate for OT
- Multiple procedure payment reductions
- Plans of care, certifications and progress reports
- Visit limits and authorizations that change by payer
Rehab Payer Rules We Manage
These are the rehab-specific rules our revenue cycle management team checks on every claim. For PT-only details, see our physical therapy billing services.
Discipline modifiers: GP, GO and GN
What it means: Medicare requires a modifier on every outpatient therapy service showing the plan of care it was delivered under: GP for physical therapy, GO for occupational therapy and GN for speech-language pathology. Assistant services also need CQ (PTA) or CO (OTA).
How we handle it: We match each service to the treating discipline and plan of care before the claim goes out.
KX threshold by discipline
What it means: Medicare sets one annual threshold amount for PT and SLP combined and a separate amount for OT. Above it, claims need modifier KX to confirm medical necessity is documented.
How we handle it: We track each patient’s spending by discipline, including services from other providers this year where visible, and add KX only when supported.
Multiple procedure payment reduction
What it means: When more than one therapy unit is billed on the same day, Medicare reduces the practice expense portion of the second and later units, across all disciplines.
How we handle it: We expect the reduction when posting payments, so true underpayments are not confused with MPPR and are appealed.
Plans of care and certification
What it means: Each discipline needs its own plan of care, certified by a physician or other qualified provider and recertified at least every 90 days, with progress reports at least every 10 treatment days.
How we handle it: We track certification and progress report dates by discipline so claims are not sent without them.
Institutional vs professional claims
What it means: Private practices bill on the CMS-1500, while rehab agencies, CORFs and hospital outpatient departments bill on the UB-04 with revenue codes 042X (PT), 043X (OT) and 044X (SLP).
How we handle it: We set up the right claim form, revenue codes and HCPCS lines for your facility type.
Home health and SNF therapy
What it means: Therapy in home health is paid under PDGM using OASIS data, and in skilled nursing facilities under PDPM, rather than per unit.
How we handle it: We support home health and SNF billing teams with documentation and claim checks for these payment models.
Our Complete Rehab Medical Billing Services
We manage the full rehab revenue cycle, from scheduling and authorization to A/R cleanup and reporting.
1. Eligibility, Visit Limits and Authorization
Before treatment we confirm therapy coverage, visit limits by discipline, deductibles, copays and prior authorization, and we track authorized visits so care is not interrupted.
2. Rehabilitation Coding by Discipline
Certified coders assign PT, OT and SLP CPT codes, timed units, discipline and assistant modifiers, and ICD-10-CM codes that support medical necessity. See our medical coding services and ICD-10 codes for physical therapy.
3. Clean Claim Submission
Claims are scrubbed for units, modifiers, NCCI edits and payer rules before submission, then tracked until paid, with rejections corrected the same day.
4. Denial Management and Appeals
Rehab claims are often denied for missing modifiers, wrong units, expired authorizations or documentation gaps. Every denial is worked through root cause analysis, corrected claims and appeals supported by the plan of care and treatment notes. See our denial management services.
5. Payment Posting, A/R Cleanup and Patient Billing
We post and reconcile payments, work old A/R, and send patients clear statements that explain therapy coverage, visit caps and deductibles.
Common Rehab Denials and How We Fix Them
Example: an OT service billed with the PT modifier
The denial. Therapeutic activities (97530) delivered by an occupational therapist are billed with modifier GP. The claim is denied or applied to the wrong threshold because the modifier does not match the OT plan of care.
How we fix it:
- Check the provider and plan. We confirm which discipline delivered the service.
- Correct the modifier. We resubmit with GO (and CO if an OTA was involved).
- Prevent the next one. Modifiers are mapped to each clinician’s discipline in your billing system.
Example: visits denied after an authorization expired
The denial. A commercial plan denies three speech therapy visits (92507) with CARC 197 (precertification or authorization absent) because the authorized visits ran out before the plan of care ended.
How we fix it:
- Request a retro review. Where the payer allows it, we ask for retroactive authorization with the progress notes.
- Appeal. If needed, we appeal with documentation of medical necessity.
- Prevent the next one. Authorized visits are tracked so renewals are requested before they run out.
Rehab Specialties We Bill
Physical and Occupational Therapy
We bill therapeutic exercise, manual therapy, neuromuscular re-education, gait training, ADL training, hand therapy and orthotic services. See our physical therapy billing.
Speech-Language Pathology
We bill speech, language, voice, swallowing and cognitive rehab services, including evaluations (92521–92524), treatment (92507) and swallowing studies.
Neuro, Orthopedic and Pediatric Rehab
We bill stroke and spinal cord injury rehab, post-surgical and sports rehab, and pediatric PT, OT and SLP. See our orthopedic billing services.
Rehab CPT Codes and Therapy Modifiers
These are the rehab codes and modifiers we work with most. Coverage and unit rules vary by payer, so we confirm each one before billing.
| Service | Codes | What we check |
|---|---|---|
| PT evaluations | 97161–97163; re-evaluation 97164 | Complexity documented |
| OT evaluations | 97165–97167; re-evaluation 97168 | Complexity documented |
| SLP evaluations and treatment | 92521–92524; 92507 (per session) | Untimed: one unit per session |
| Timed treatment | 97110, 97112, 97116, 97140, 97530, 97535 | Units from total timed minutes |
| Swallowing and cognition | 92526, 92610; 97129, 97130 | Medical necessity documented |
| Discipline modifiers | GP (PT), GO (OT), GN (SLP); CQ and CO for assistants | Modifier matches the plan of care |
| Threshold and edits | KX; 59 or XU for separate procedures | Spending tracked by discipline |
| Institutional claims | Revenue codes 042X, 043X, 044X on the UB-04 | Facility type and HCPCS lines |
Why Outsource Rehab Medical Billing?
Running rehab billing in-house means keeping staff current on three disciplines’ rules. Outsourcing to Prospect Healthcare Solutions gives you:
- Lower overhead costs
- Fewer unit and modifier errors
- Faster reimbursement
- Higher collections
- Stronger compliance
Built for Rehab Practices
- Dedicated rehab billers and a single account manager
- Certified coders and billers
- HIPAA-compliant processes
- Work inside common therapy systems such as WebPT, Clinicient, TherapyNotes and SimplePractice
- Transparent pricing
Rehab Billing Compliance
Therapy services draw frequent medical review. We follow CMS and payer rules and build compliance into every step:
- Units supported by documented minutes
- Correct discipline, assistant and KX modifiers
- Certified plans of care and timely progress reports
- Authorizations on file for every visit
- ABNs signed before non-covered care
Learn about our medical billing audits.
Who We Serve
Our rehab billing services support:
- Outpatient rehab clinics and therapy groups
- Rehab agencies and CORFs
- Hospital outpatient therapy departments
- Pediatric therapy practices
- Neurological and sports rehab centers
- Home health and skilled nursing therapy teams
- Practices that also offer chiropractic care
Technology and Reporting for Rehab Billing
We use billing analytics to catch problems early and keep you informed:
- Real-time claim tracking
- Denial reasons by payer and discipline
- Collections and monthly revenue trends
- A/R aging reports
Weekly and monthly reports give you full visibility into how each discipline and payer is performing.
Rehab Medical Billing FAQs
What are rehab medical billing services?
They cover eligibility checks, authorization, coding, claim submission, denial management and payment posting for physical therapy, occupational therapy, speech-language pathology and multidisciplinary rehab care.
What are the GP, GO and GN modifiers?
They show which therapy plan of care a service was delivered under: GP for physical therapy, GO for occupational therapy and GN for speech-language pathology. Medicare requires one on every outpatient therapy service.
Is the KX threshold the same for PT, OT and speech therapy?
No. Medicare uses one combined threshold for PT and speech-language pathology and a separate threshold for occupational therapy.
What is the therapy multiple procedure payment reduction?
When more than one therapy unit is billed on the same day, Medicare reduces the practice expense part of payment for the second and later units.
Do you bill rehab agencies and hospital outpatient therapy?
Yes. We bill institutional claims on the UB-04 with therapy revenue codes as well as professional claims on the CMS-1500.
How do I get a quote for rehab billing?
Request a free billing quote online or call +1 (469) 935-4617. We review your current billing and send a plan and pricing.
Partner with Experts in Rehab Medical Billing Services
Your team helps patients regain strength, movement and independence. We handle the coding, claims, denials and compliance so your practice gets paid accurately and on time.
Tell us about your practice for a free quote, or call +1 (469) 935-4617.