As soon as a new patient enters the clinic, an assessment procedure takes place, which starts with an appropriate billing decision. This may seem like an obvious step, but choosing the wrong CPT code will mean losing money on either side. In a high-deny industry like physical therapy, where the number of denied claims is significantly higher compared to others, not taking this seriously can easily put your business in the red zone. This is exactly why having a reliable physical therapy billing service on your side matters from the very first visit.
The first step in learning about physical therapy CPT codes is to find out more about codes 97161, 97162, and 97163, which represent three evaluation codes used by clinics all across the United States. In other words, these are three codes that everyone in your office needs to know, especially when it comes to PT billing and coding. Any experienced physical therapy billing service provider will tell you that these codes, introduced instead of the previous code 97001 in 2017, still cause problems in the PT industry in 2026.
The Three Tiers — What Each Code Actually Means
All the above codes revolve around the clinical complexity and not time – this is what you must remember. It means that regardless of whether your 45-minute evaluation for a low-complexity issue like an ankle sprain without any comorbidity ends up in 97161. This is because the code doesn’t depend on time but on the presentation.
97161 – Low Complexity Evaluation
The physical therapy evaluation low complexity CPT code refers to situations where you are evaluating a patient with predictable or stable diagnosis. It can be a simple ankle sprain without any comorbidity where you evaluate one to two body regions and personal issues; in addition, the clinical decision-making should also be simple.
97162 – Evaluation Moderate Complexity
This is your go-to code for most outpatient PT practices. A moderate complexity evaluation includes patients that have evolving or unstable conditions that require a greater level of examination. You’ll be examining three or more patient factors, three or more body system components, and moderate level of clinical judgment. An example of a classic moderate complexity condition would be an individual who is recuperating from total knee arthroplasty and is also Type 2 diabetic. Your treatment plan can’t assume a linear progression toward improvement. Face-to-face time is generally about 30 minutes..
97163 – High Complexity Evaluation
The 97163 CPT coding for physical therapy includes those patients that have the highest level of complexity. This includes an unstable or unpredictable condition in the patient, the examination of four or more anatomical regions, and high complexity in clinical decision making. For example, a patient who has had a stroke and has a history of heart problems.
The Rule That Catches Most Clinics Off Guard
Here’s where practices get tripped up: the correct code is determined by the lowest qualifying pillar, not the highest. You need to meet the threshold across all three components — history, examination, and clinical decision-making.
If your patient’s history and exam both support moderate complexity but the clinical decision-making only reaches the low threshold, the correct code is 97161, not 97162. Payers catch this mismatch more often than you’d think, and it’s one of the fastest ways to trigger a records request.
Bundling of 97530 with evaluation.
The NCCI edits combine therapeutic procedures (97530) with codes for evaluations, and the modifier 59 is not able to bypass this edit. You can submit codes for a physical therapy evaluation and treatment on the same day such as 97110 and 97140, but the line item for 97530 will be denied. Plan the therapeutic procedures on another visit date.
Leaving ICD-10 specificity out of account.
Using M54.5 as a general diagnosis rather than M54.51 reduces your chances of making a good case. Insurance carriers are supposed to match the evaluation in terms of complexity and specificity.
Changes (and Nonchanges) in 2026
The American Medical Association announced 418 CPT code changes in 2026, 288 of which are new codes, 46 revised, and 84 deleted. There haven’t been any changes in 97161, 97162, and 97163. The multi-tiered evaluation system has not changed at all. What has changed is that the level of scrutiny will increase, and the odds of your practice being audited become higher with each year. In addition, evaluative codes are usually the first point of attack. Partnering with a dedicated physical therapy billing service can help your practice stay audit-ready.
Let Park Medical Billing Manage the Complexities for You
Correctly coding evaluations is critical, but that’s only one step in the ever-growing revenue cycle process. As payer policies change, as NCCI bundling guidelines continue to be implemented, as modifiers need to be used, and as audits become more prevalent, internal physical therapy billing is becoming a complex task that takes away from your other responsibilities.
At Park Medical Billing, they partner with physical therapy practices, rehabilitation facilities, multiple office practices, and hospitals throughout the United States. The Park Medical Billing team specializes in physical therapy billing, whether it be evaluation code selection, denial management, Medicare billing compliance, or something else entirely, so that your team can focus on providing the best care possible while generating revenues at the same time.
If you’re looking to reduce denials, comply with new regulations, and implement a physical therapy billing system to match your facility, contact Park Medical Billing today for a complimentary consultation.
Frequently Asked Questions
Q1. CPT code 97161: Describe for physical therapy.
The CPT code 97161 is the code for low complexity physical therapy evaluation. The patient needs to have a stable condition, one or two personal factors, and simple decision-making in order to use this code. The best example would be the evaluation of a simple ankle sprain with no medical complications.
Q2. CPT code 97163: Describe for physical therapy.
The code CPT 97163 is used to describe a high complexity evaluation. In order to be coded in this way, the patient should have an unstable condition, three or more co-morbidities, as well as an examination of four or more body areas.
Q3. How do the CPT codes 97161, 97162, and 97163 differ?
These are all codes for an initial evaluation of physical therapy. Code 97161 pertains to low-complexity evaluation (stable condition/1–2 body regions), code 97162 pertains to moderate-complexity evaluation (evolving condition/3+ body regions), while code 97163 pertains to high-complexity evaluation (unstable condition/4+ body regions). The type of evaluation depends on three pillars of evaluation – history, examination, and clinical decision making.
Q4. What is the CPT code for physical therapy evaluation?
The CPT codes for physical therapy evaluation are 97161 (low), 97162 (moderate), and 97163 (high) for an initial evaluation. However, in a re-evaluation of a patient wherein the plan of care will need revision, the CPT code for physical therapy re-evaluation is 97164. Treatment procedures like therapeutic exercise (97110) and manual therapy (97140) are billed separately.
Q5. Can you bill for physical therapy evaluation and treatment on the same day?
Yes. There’s no Medicare rule prohibiting same-day evaluation and treatment. You can bill a CPT code for physical therapy evaluation and treatment together — for example, 97162 plus 97110 — as long as both services are medically necessary and properly documented. The one exception is 97530 (therapeutic activities), which is bundled with evaluation codes under NCCI edits and will be denied if billed on the same date of service.
