Physical therapy billing has its own vocabulary, workflows, and compliance considerations. Whether you are a new PT practice or an experienced clinic looking to tighten up your revenue cycle, this guide covers the fundamentals.
## What Makes PT Services Medically Necessary?
Medicare and most commercial payers require that PT services be medically necessary. Common conditions that support medical necessity include:
– **Ankle ligament surgery** — post-surgical rehabilitation is a standard medically necessary indication
– **Knee replacement** — total or partial knee arthroplasty requires structured PT for functional recovery
– **Hip replacement** — post-replacement PT is typically pre-authorized and expected
– **Shoulder replacement** — rotator cuff repairs and total shoulder arthroplasty require progressive PT protocols
Documentation must clearly support the clinical need for skilled intervention, functional goals, and the expectation of improvement.
## Key PT Billing Terminology
**Initial Evaluation (IE)**
The first visit with a new patient or a new episode of care. Billed with codes 97161, 97162, or 97163 based on complexity (low, moderate, high).
**Plan of Care (POC)**
A written treatment plan that defines the patient’s goals, anticipated frequency and duration of treatment, and interventions to be used.
**Initial POC Certification**
The treating physician or non-physician practitioner must certify the plan of care. Without this, Medicare will not reimburse.
**Documentation**
Every visit must be documented with the time spent on each procedure, the clinical rationale, and the patient’s response to treatment. Timed codes require accurate 8-minute rule tracking.
## The CMS Form 1500
Physical therapy services billed to Medicare and most commercial insurance are submitted on the CMS Form 1500 (or its electronic equivalent, the 837P). Key fields include:
– **Box 21:** Diagnosis codes (ICD-10)
– **Box 24D:** Procedure codes (CPT)
– **Box 24J:** Rendering provider NPI
– **Box 33:** Billing provider information
## Practice Management Software and Clearinghouses
Most PT practices use a combination of:
1. **EMR/EHR** for documentation and scheduling
2. **Practice Management (PM) software** for billing and claims
3. **Clearinghouse** to scrub and transmit claims electronically
Some platforms combine all three. Others separate the EMR from the PM, which gives practices more flexibility to choose best-in-class tools for each function. The clearinghouse performs pre-submission edits that catch common errors before the claim reaches the payer.
## 2022 Medicare Fee Schedule — Common PT Codes
| CPT Code | Description | 2022 Medicare Rate (National) |
|———-|————-|——————————-|
| 97110 | Therapeutic exercise (15 min) | $32.99 |
| 97530 | Therapeutic activities (15 min) | $42.35 |
| 97140 | Manual therapy (15 min) | $35.76 |
| 97012 | Mechanical traction | $23.61 |
| 97162 | PT evaluation, moderate complexity | $108.78 |
| 97116 | Gait training (15 min) | $35.76 |
*Rates vary by geographic location. Always verify with your MAC.*
## Final Thoughts
Physical therapy billing is detail-intensive. A single missing signature or incorrect modifier can delay or deny payment. If your PT practice is struggling with denials or AR over 90 days, our team at MedLink Services can help you identify and resolve the root causes.