CPT Code 97110: Therapeutic exercise billing guide

Key Takeaways

CPT Code 97110 covers therapeutic exercises – including strength, endurance, range of motion, and flexibility training – performed with direct one-on-one patient contact.

Billing is time-based: one unit equals 15 minutes, and Medicare’s 8-minute rule determines whether a partial unit qualifies for reimbursement.

Insufficient documentation is the top denial trigger – notes must record the diagnosis, treatment goals, time spent, patient response, and the treating therapist’s signature.

Pabau’s claims management software automates time-based unit calculation and flags documentation gaps before claims reach the payer.

Most physical therapy claim denials for CPT Code 97110 come down to one problem: the documentation does not match what was billed. Payers routinely deny therapeutic exercise claims when notes are missing time stamps, lack a functional goal, or fail to distinguish the session from group therapy. According to the American Medical Association (AMA), CPT Code 97110 is one of the most frequently audited physical medicine codes in outpatient settings. This guide covers medical billing workflows for 97110 from the official descriptor through documentation requirements, the 8-minute rule, Medicare rates, code comparisons, and denial prevention strategies.

CPT Code 97110: definition and official description

CPT Code 97110 describes therapeutic exercises performed with the specific goal of developing strength, endurance, range of motion, and flexibility. The AMA’s official descriptor reads: “Therapeutic procedure, one or more areas, each 15 minutes; therapeutic exercises to develop strength and endurance, range of motion and flexibility.”

Two elements make this code non-negotiable for proper billing. First, the exercises must be performed under direct one-on-one patient contact – the treating therapist must be present and actively engaged, not supervising from across the room. Second, the session is time-based, with each unit representing exactly 15 minutes of hands-on therapeutic exercise.

• Strength training: Progressive resistance exercises targeting specific muscle groups
• Endurance training: Cardiovascular or sustained-effort activities with a therapeutic goal
• Range of motion: Passive, active-assistive, or active stretching to restore joint mobility
• Flexibility: Targeted stretching programs to address soft-tissue restriction

The critical distinction from CPT 97530 (therapeutic activities) is the nature of the exercise itself. Code 97110 covers rote, repetitive exercises targeting a specific physical parameter. Code 97530 covers dynamic, functional activities that simulate real-life tasks. Billing the wrong code for the session type is the most common audit trigger practices face.

Who can bill CPT 97110? Eligible providers

Provider eligibility for CPT Code 97110 follows scope-of-practice rules that vary by state. The following provider types are generally eligible under Medicare and most commercial payers, though individual state licensing laws and payer contracts should always be verified before billing. Practices managing multi-provider teams benefit from occupational therapy software that can configure billing permissions by role.

For practices operating in states with direct access laws, physical therapists can bill without a physician referral. Understanding your state’s requirements is essential – review physical therapy clinic requirements for a state-level example of how licensing and billing intersect.

Documentation requirements for CPT 97110

Documentation failures account for the majority of 97110 denials on audit. According to guidance from the AAPC, every 97110 claim must be supported by a clinical note that independently justifies each element billed. Meeting physiotherapy compliance requirements means building these elements into every session note, not reconstructing them after the fact.

• Diagnosis: The ICD-10-CM code(s) establishing medical necessity for therapeutic exercise
• Functional goals: Measurable, time-bound treatment goals directly tied to the exercises performed
• Treatment performed: Specific exercises, sets, reps, resistance levels, or duration – not just “therapeutic exercise”
• Time: Start and stop times, or total timed minutes, for each CPT code billed during the session
• Patient response: Objective measure of how the patient tolerated treatment and any modifications made
• One-on-one contact: A clear statement that the therapist provided direct patient contact throughout
• Therapist signature: Dated signature (or credentials and date for electronic records)

One documentation nuance that trips up many practices: the note must reflect the specific exercises performed in that session, not a carry-forward from a previous note. Copy-forward documentation is a primary OIG audit flag for physical therapy claims.

How to bill CPT 97110: units, time rules, and the 8-minute rule

CPT Code 97110 is a time-based code. One unit equals 15 minutes of direct therapeutic exercise. For sessions that do not land on a clean 15-minute multiple, Medicare’s 8-minute rule determines how many units to bill. Understanding this rule prevents both underbilling and overpayment risk.

The 8-minute rule explained

Under CMS guidance in the Claims Processing Manual (Chapter 5), a timed service requires a minimum of 8 minutes of direct contact to bill one unit. For any time beyond a full 15-minute unit, the remaining minutes must reach at least 8 to count as an additional unit.

When a session includes multiple timed codes (for example, 97110 and 97112 billed on the same day), total timed minutes are calculated across all codes before units are allocated. Time must be distributed proportionally and documented per code.

Unit caps and medical necessity

There is no universal Medicare unit cap for 97110 per visit. Coverage is determined by medical necessity and documentation, not a fixed daily limit. However, many Medicare Administrative Contractors (MACs) and commercial payers apply their own Local Coverage Determinations (LCDs) that specify typical unit ranges by diagnosis. Billing significantly above those ranges without strong documentation invites a prepayment review. Practices that support launching a physiotherapy clinic need to account for MAC LCD review from day one.

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Pabau automates time-based unit calculation for codes like CPT 97110, flags incomplete documentation before claims go out, and connects directly to clearinghouses so your physical therapy practice gets paid faster.

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CPT 97110 vs 97530 vs 97112: which code to bill?

Choosing between 97110, 97530, and 97112 comes down to the clinical purpose of the session. These codes cover distinct therapeutic concepts, and billing the wrong one is a NCCI edit violation, not merely an administrative error.

Can 97110 and 97112 be billed on the same day? Yes, with conditions. Both require separate documentation justifying each code independently, and the time spent on each must be documented individually. NCCI edits do not bundle these two codes together, so concurrent billing is allowed when clinically appropriate and properly documented. The same applies to 97110 and 97140.

Medicare reimbursement rates for CPT 97110 (2024-2025)

CPT Code 97110 is reimbursed per 15-minute unit under the Medicare Physician Fee Schedule (MPFS). National average rates fluctuate annually with CMS updates. Submit claims through electronic claims via Claim.MD to access real-time eligibility verification and ERA processing that catches rate discrepancies before they result in underpayment.

The estimated $30-$34 per-unit national average is based on historical MPFS data. The exact rate for your locality requires a direct lookup in the CMS Physician Fee Schedule search tool, which updates annually. Using a tool like FastRVU’s 2026 RVU lookup lets you check work, practice expense, and malpractice RVU components that feed into the final payment calculation for your region. Processing electronic remittance advice from payers confirms what was actually paid versus what was expected.

Common billing errors and how to avoid claim denials for CPT 97110

The OIG has repeatedly flagged physical therapy billing as a high-risk area for overpayments. For CPT Code 97110 specifically, the errors that most reliably trigger denials fall into four patterns. Managing claim denials proactively means recognizing these patterns before they become payer disputes.

• Generic documentation: Notes that say “therapeutic exercise performed” without specifying exercises, sets, resistance, or time. Every payer expects the note to paint a picture of what actually happened.
• Billing 97110 for group therapy: If more than one patient is being treated simultaneously, even if exercises are the same, this is group therapy (CPT 97150). 97110 requires dedicated one-on-one time.
• Misuse of 97110 vs 97530: Billing 97110 for a session that was functionally oriented (simulated ADLs, job tasks, sport-specific movements) instead of 97530. NCCI edits flag this pattern on audit.
• 8-minute rule errors: Rounding up time to claim an extra unit when the remaining minutes fall below 8. This is a direct overpayment and one of the easiest errors for a payer to detect.
• Missing functional goals: Treatment without documented, measurable goals tied to the patient’s functional deficits. Medicare explicitly requires goal-oriented documentation for coverage.

Practices focused on submitting clean claims build pre-submission validation into their billing workflow, catching these errors before the claim leaves the practice rather than resolving them through appeal.

How practice management software helps with 97110 billing compliance

Documentation gaps and time-based billing errors are workflow problems as much as they are clinical ones. When therapists are charting manually between patients, critical fields get missed. When billing staff manually count units from handwritten time logs, calculation errors compound.

Pabau’s claims management software integrates clinical documentation with billing so that time stamps captured in the session note automatically calculate timed units for 97110 claims. Required documentation fields can be configured as mandatory within SOAP note templates, so claims cannot be submitted with missing treatment-time entries or unsigned notes. This closes the most common gap between what happened in the session and what the payer receives.

For practices managing multiple providers across PT, OT, and rehab specialties, Pabau’s physical therapy EMR centralizes all billing and documentation into one platform, eliminating the manual handoffs that introduce coding errors. Physiotherapy clinic management tools built into the platform track denial trends by code, making it easy to identify if 97110 claims from a specific provider or payer are systematically underperforming.

Conclusion

CPT Code 97110 is straightforward in concept and frequently mishandled in execution. The gap between a covered claim and a denied one almost always lives in the documentation: missing time stamps, generic exercise descriptions, or a session that should have been billed as 97530. Building the right workflow closes that gap before claims go out.

Pabau’s integrated clinical notes and billing tools are built for exactly this kind of time-based code compliance, automating unit calculation and enforcing documentation completeness at the point of care. See how Pabau handles 97110 billing for physical therapy and rehab practices: explore our physical therapy EMR.

Continue your research

Need guidance on physiotherapy compliance in your state? Physiotherapy compliance requirements breaks down the regulatory obligations physical therapy practices must meet to stay audit-ready.

Exploring software for your rehab practice? Physiotherapy clinic management software covers what to look for in a platform that supports both documentation and billing workflows.

Want to understand the full revenue cycle context? What is revenue cycle management explains how individual CPT codes like 97110 fit into the broader financial flow of a healthcare practice.

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