Physical Therapy Billing Services

Physical therapy billing is entirely time-based with the 8-minute rule governing unit calculation. Add authorization tracking, functional reporting requirements (G-codes), and the therapy cap, and PT billing becomes one of the most rules-heavy specialties.

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97110Therapeutic Ex
97140Manual Therapy
97530Activities
8-minRule

Why Physical Therapy Billing Requires Specialty Expertise

PT billing uses timed CPT codes (97110, 97140, 97530, 97542) with the 8-minute rule determining how many units can be billed per service. Untimed codes (97012-97028) don't follow the same rules. CMS functional reporting requirements and authorization tracking add additional complexity.

Common Physical Therapy CPT Codes

Our coders handle these physical therapy codes daily. This is not an exhaustive list.

Code
Description
97161
Physical therapy evaluation, low complexity
97162
Physical therapy evaluation, moderate complexity
97163
Physical therapy evaluation, high complexity
97164
Physical therapy re-evaluation
97110
Therapeutic exercise, 15 minutes
97140
Manual therapy techniques, 15 minutes
97112
Neuromuscular reeducation, 15 minutes
97530
Therapeutic activities, 15 minutes
97035
Ultrasound therapy, 15 minutes
97014
Electrical stimulation, unattended

2026 Medicare Allowables for Physical Therapy CPT Codes by State

Medicare reimbursement for physical therapyprocedures is not a single national number. Each code's allowable is adjusted by your state's Geographic Practice Cost Index (GPCI) and processed under that state's Medicare Administrative Contractor (MAC), so the same physical therapy CPT code pays a different amount in California than it does in Texas or Florida. The table below shows the 10 core physical therapycodes our coders bill priced at each state's 2026 locality. The non-facility figure is what an office-based practice collects. The facility figure applies when the service is performed in a hospital-based setting.

Commercial carriers in each state typically reimburse above these Medicare benchmarks and state Medicaid below them, but the Medicare allowable is the contracting anchor every payer negotiation starts from. Compare any individual code across all states with our Medicare fee calculator by state.

2026 Medicare non-facility allowable for Physical Therapy CPT codes across high-volume states
CodePhysical Therapy ProcedureCATXFLNYPAILOHGANCMI
97161Physical therapy evaluation, low complexity$108.00$97.41$98.33$105.75$97.41$96.80$93.86$95.88$94.66$95.19
97162Physical therapy evaluation, moderate complexity$108.00$97.41$98.33$105.75$97.41$96.80$93.86$95.88$94.66$95.19
97163Physical therapy evaluation, high complexity$108.00$97.41$98.33$105.75$97.41$96.80$93.86$95.88$94.66$95.19
97164Physical therapy re-evaluation$74.89$67.08$67.90$73.16$67.06$66.70$64.42$65.97$65.00$65.47
97110Therapeutic exercise, 15 minutes$31.95$28.91$29.42$31.47$28.94$28.95$27.87$28.52$28.02$28.36
97140Manual therapy techniques, 15 minutes$30.47$27.58$28.08$30.03$27.61$27.64$26.59$27.21$26.73$27.06
97112Neuromuscular reeducation, 15 minutes$36.06$32.56$33.10$35.46$32.59$32.57$31.37$32.10$31.56$31.91
97530Therapeutic activities, 15 minutes$39.12$34.82$35.45$38.21$34.81$34.75$33.33$34.23$33.61$33.98
97035Ultrasound therapy, 15 minutes$15.75$14.27$14.70$15.62$14.30$14.46$13.75$14.12$13.77$14.07
97014Electrical stimulation, unattended$13.92$12.60$13.03$13.83$12.64$12.80$12.14$12.48$12.15$12.44

Full Physical Therapy fee detail by state

2026 Medicare allowables for physical therapy CPT codes in California, processed under Noridian Healthcare Solutions (Jurisdiction E). See California medical billing.

2026 Medicare allowables for Physical Therapy CPT codes in California
CodeDescriptionNon-FacilityFacility
97161Physical therapy evaluation, low complexity$108.00$108.00
97162Physical therapy evaluation, moderate complexity$108.00$108.00
97163Physical therapy evaluation, high complexity$108.00$108.00
97164Physical therapy re-evaluation$74.89$74.89
97110Therapeutic exercise, 15 minutes$31.95$31.95
97140Manual therapy techniques, 15 minutes$30.47$30.47
97112Neuromuscular reeducation, 15 minutes$36.06$36.06
97530Therapeutic activities, 15 minutes$39.12$39.12
97035Ultrasound therapy, 15 minutes$15.75$15.75
97014Electrical stimulation, unattended$13.92$13.92

Source: 2026 Medicare Physician Fee Schedule, locality-adjusted by state MAC. Figures are for reference and contracting benchmarks, not a guarantee of payment.

Physical Therapy Billing Challenges We Solve

Common billing problems in physical therapy and how our team handles them.

8-Minute Rule

Unit calculation based on total direct treatment time. Errors in either direction affect revenue or compliance.

Authorization Tracking

Most payers limit visits per authorization period. Missing re-auth means unpaid visits.

Timed vs Untimed Codes

Timed codes follow the 8-minute rule. Untimed codes (modalities) don't. Mixing them up causes errors.

Medicare Therapy Cap

Threshold amounts trigger manual review. KX modifier and documentation requirements.

Common Physical Therapy Denial Reasons

We prevent these before submission and appeal aggressively when they occur.

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Unit calculation based on total direct treatment time
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Most payers limit visits per authorization period
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Timed codes follow the 8-minute rule
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Threshold amounts trigger manual review

Revenue Opportunities Most Physical Therapy Practices Miss

Physical therapy practices most commonly lose revenue through 8-minute rule calculation errors. When a therapist provides 23 minutes of therapeutic exercise (97110), 15 minutes of manual therapy (97140), and 8 minutes of neuromuscular re-education (97112), the total timed treatment is 46 minutes = 4 units. But many practices calculate units per service instead of in total, billing only 3 units. Over 40 patients per day, one missed unit per patient at $25-30 per unit adds up to $200,000+ annually. Eval code optimization is the second opportunity. PT evaluations come in three levels (97161 low, 97162 moderate, 97163 high complexity) with significant reimbursement differences. Documentation should reflect the true complexity to support the appropriate level.

Payer-Specific Physical Therapy Billing Tips

Medicare PT billing follows the therapy cap system with a KX modifier required above the threshold amount. Medical review may be triggered above a higher threshold. Documentation must clearly support ongoing medical necessity for each visit. Commercial payers typically authorize a set number of PT visits (12-20 per authorization). Re-authorization requires documentation of functional progress and continued need. Payers are increasingly using utilization management tools that review therapy documentation algorithmically — generic or template-based notes are more likely to trigger a denial than individualized documentation.

Physical Therapy Billing Best Practices

Practical tips from our coding team to maximize reimbursement and minimize denials.

1
Apply the 8-minute rule correctly: 8-22 minutes = 1 unit, 23-37 minutes = 2 units, 38-52 minutes = 3 units, 53-67 minutes = 4 units. When providing multiple timed services, add all minutes together before calculating units.
2
Untimed codes (modalities like 97010 hot packs, 97014 electrical stimulation) do not follow the 8-minute rule and cannot be used to round up timed service units.
3
The KX modifier is required on Medicare PT claims when the therapy threshold ($2,330 for PT/SLP combined in 2026) is exceeded. It certifies that services are medically necessary.
4
Group therapy (97150) reimburses less than individual codes. If the therapist provides 1-on-1 treatment, bill the individual code — don't default to group because multiple patients are in the gym.

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What We Handle for Physical Therapy Practices

Time-based CPT coding with 8-minute rule
Authorization tracking and re-auth management
Timed vs untimed service differentiation
Medicare therapy cap compliance
Functional outcome reporting
Multi-therapist practice billing

Why Choose Go Medical Billing for Physical Therapy

PT billing errors center on the 8-minute rule and authorization management. Our team handles both with precision, ensuring every unit is correctly calculated and every authorization is tracked.

We serve physical therapy practices in all 50 states, starting at 2.49% of collections. Our credentialing team handles payer enrollment, and our A/R specialists recover aging claims.

Physical Therapy Billing by State

We handle physical therapy billing in all 50 states. The 2026 Medicare allowables for physical therapy CPT codes in every state are in the fee table above. Open any state below for its full payer environment, Medicaid rules, and Medicare MAC policies.

Frequently Asked Questions

We calculate units based on total direct treatment time across all timed services, following CMS guidelines for mixed remainders.
Yes. Real-time tracking with re-auth requests submitted before visits run out.

Get Expert Physical Therapy Billing Support

Stop losing revenue to physical therapy coding errors and preventable denials. Call 888-701-6090 for a free billing assessment.