PT Billing — Every Unit Counted, Every Dollar Captured

Proven Results

• 24% Average Revenue Increase
• 97.2% First-Pass Claim Rate
• 40% Reduction in Denials
• 11 Days Faster Payment Collection

Common Billing Challenges

Therapy Cap & Threshold Complexities

Navigating Medicare therapy caps, KX modifiers, and threshold requirements creates confusion and potential revenue loss.

Functional Limitation Reporting

G-code reporting requirements for functional limitations demand precise documentation at evaluation, progress, and discharge.

Medical Necessity Documentation

Proving medical necessity for ongoing therapy requires detailed progress notes and measurable functional outcomes.

Time-Based vs Service-Based Coding

Confusion between timed codes requiring 8-minute rule calculations and untimed service codes leads to billing errors.

Modifier Usage for Multiple Procedures

Proper use of modifiers (GP, GO, GN, 59, XS) for multiple therapy services on the same day is critical and complex.

Evaluation vs Treatment Distinction

Properly coding initial evaluations, re-evaluations, and treatment sessions with appropriate CPT codes.

Our Solutions

PT-Certified Billing Specialists

Our team includes physical therapy billing experts trained in therapy-specific CPT codes, modifiers, and documentation requirements.

• Accurate 8-minute rule calculations for timed codes
• Proper G-code reporting for functional limitations
• Expert modifier application for multiple procedures
• Maximized reimbursement through correct code selection

Medical Necessity Documentation Support

We help ensure your documentation meets payer requirements for demonstrating continued medical necessity.

• Review of progress notes for compliance
• Guidance on functional outcome measurements
• Support for audit defense preparation
• Reduced claim denials from documentation issues

Therapy Threshold & Cap Management

Expert handling of Medicare therapy thresholds and KX modifier requirements to maximize allowable payments.

• Automatic threshold tracking and alerts
• Proper KX modifier application when needed
• Documentation guidance for exceptions
• Maximized therapy cap utilization

Real-Time Billing Compliance

Advanced systems track therapy sessions, units, and documentation to ensure billing compliance.

• Time-unit validation before claim submission
• Modifier compliance checking
• G-code reporting verification
• Detailed performance analytics

Specialized Services

Evaluation & Re-evaluation Billing

Accurate coding for initial evaluations, re-evaluations, and discharge assessments.

• 97161-97163 evaluation codes
• Re-evaluation coding (97164)
• Complexity level determination
• Discharge documentation

Therapeutic Procedures

Expert billing for therapeutic exercises, manual therapy, and neuromuscular re-education.

• Therapeutic exercise (97110)
• Manual therapy (97140)
• Neuromuscular re-ed (97112)
• Gait training (97116)

Modality Billing

Proper coding for physical agent modalities and their supervised/constant attendance requirements.

• Hot/cold packs (97010)
• Electrical stimulation (97014)
• Ultrasound (97035)
• Mechanical traction (97012)

Functional Limitation Reporting

Complete G-code management for mobility, changing positions, carrying, and other functional categories.

• G-code selection and reporting
• Severity modifier application
• Progress tracking
• Discharge G-codes

Common CPT Codes Reference

Key codes include 97110 (Therapeutic exercises — 15 min), 97112 (Neuromuscular reeducation — 15 min), 97116 (Gait training — 15 min), 97140 (Manual therapy techniques — 15 min), 97530 (Therapeutic activities — 15 min), 97035 (Ultrasound therapy — 15 min), 97010 (Hot or cold packs application), 97012 (Traction, mechanical), 97032 (Electrical stimulation, attended — 15 min), 97750 (Physical performance test/measurement — 15 min). Proper code selection requires understanding of bundling rules, NCCI edits, and modifier usage.

Expert Billing Insights

The 8-Minute Rule and Time-Based Billing

Physical therapy billing for time-based CPT codes follows the "8-minute rule" — a unit of service is billable when the therapist provides at least 8 minutes of that service. For multiple timed services in one visit, total minutes are divided and allocated to maximize appropriate unit reporting. Failing to document start/stop times or total treatment minutes is the single largest PT audit risk.

• 8–22 minutes = 1 unit; 23–37 minutes = 2 units; 38–52 minutes = 3 units
• Document each service's start and stop time in the clinical note
• Untimed codes (hot packs, TENS) do not count toward total timed minutes
• Medicare requires a separate, contemporaneous log when multiple timed codes are billed

KX Modifier and Therapy Cap Management

Medicare imposes annual therapy spending thresholds (caps) for PT/SLP combined and OT separately. When medically necessary services exceed the cap, the KX modifier must be appended to signal that the services are medically necessary and documented. Without KX, Medicare will automatically deny claims beyond the cap amount. Practices must track cumulative spending per beneficiary across all providers.

• Medicare PT+SLP cap applies jointly; OT has a separate cap
• KX modifier is required once cap is exceeded — no KX means automatic denial
• Maintain a cap tracker per patient per calendar year
• Document medical necessity in the plan of care to support KX usage

Functional Limitation Reporting (FLR) and Plan of Care

CMS requires functional limitation G-codes and severity modifiers at initial evaluation, discharge, and every 10 treatment visits. These codes must align with the primary functional limitation being treated and progress toward measurable outcomes. A well-documented plan of care signed by the supervising physician or NPP is required to bill Medicare and most commercial payers.

• G-code pairs (current status + projected goal) required per functional limitation
• Severity modifiers range from 0% impaired to 100% impaired
• Plan of care must be certified before billing and recertified every 90 days
• Missing or delayed physician signature triggers retrospective denials

Payer-Specific Billing Tips

Medicare Part B

• Use PTAN (Provider Transaction Access Number) — NPI alone is insufficient for PT
• Medicare requires "incident to" supervision rules for PT assistants (PTAs)
• PTAs billing independently are subject to a 15% payment reduction under Medicare guidelines
• Telehealth PT is permanently covered for some services post-PHE — verify coverage by code

Medicaid (State Plans)

• PT coverage, visit limits, and prior auth requirements vary dramatically by state
• Many state Medicaid programs require prior authorization for PT beyond visit 6
• Managed Medicaid plans may have narrower networks and separate billing portals
• Children's Medicaid (EPSDT) covers medically necessary PT without visit limits in most states

Commercial & Managed Care

• Most commercial plans require prior authorization after initial evaluation
• Many plans limit PT to 20–30 visits per calendar year — track visit counts per patient
• Verify in-network status before each plan year; networks change January 1
• Some plans require outcome measures (PROMIS, FOTO) for continued care authorization

Workers' Compensation

• Workers' comp billing uses state-specific fee schedules, not Medicare rates
• Every visit may require a separate authorization or progress report
• Return-to-work goals must be documented alongside functional milestones
• Bill with appropriate workers' comp-specific codes and injury date on claims

Related Billing Resources

• Orthopedic Billing
• Pain Management Billing
• Chiropractic Billing
• Eligibility Verification
• Prior Authorization Services
• CPT Codes Reference Guide
• Medical Billing Glossary

Key Services

• physical therapy billing
• PT billing services
• therapy billing
• rehabilitation billing
• PT coding
• therapy cap management