CPT Code 97162: Physical therapy evaluation moderate complexity

Key Takeaways

CPT Code 97162 is the AMA billing code for a physical therapy evaluation of moderate complexity, introduced January 1, 2017 to replace CPT 97001

Documentation must cover 1-2 personal factors or comorbidities affecting the plan of care, plus examination of 3 or more body systems using standardized tests

The GP modifier is required when billing 97162 for Medicare patients. Skipping it results in automatic claim denial

Pabau’s claims management software flags missing modifiers and incomplete documentation fields before claims are submitted, reducing denials at the source

CPT Code 97162 is the AMA billing code for a physical therapy evaluation of moderate complexity. It replaced CPT 97001 on January 1, 2017, as the middle tier of a three-code system built around clinical complexity rather than time spent with the patient.

Most claim denials on initial evaluations trace back to one of two problems: the wrong complexity tier, or documentation missing a required element — a body system left out of the exam notes, or a comorbidity named without an explanation of how it affects the plan of care.

This guide covers the AMA descriptor in full, the documentation requirements auditors check first, the modifiers coders routinely get wrong, and where 97162 stops and 97161 or 97163 begins.

Physical therapists working through EMR software built for PT-specific workflows need these rules embedded in daily use, not checked after the fact. The sections below build from the official code descriptor outward to practical billing guidance.

CPT Code 97162: Definition and clinical description

CPT Code 97162 is the AMA-designated billing code for a physical therapy evaluation of moderate complexity. It replaced CPT 97001 on January 1, 2017, when the American Physical Therapy Association and AMA introduced the current three-tier evaluation system to reflect clinical variation in patient complexity.

The AMA descriptor requires all three of the following components to be present and documented for a valid 97162 claim:

• History of present problem with 1-2 personal factors and/or comorbidities that impact the plan of care
• Examination of body systems using standardized tests and measures addressing 3 or more elements from the following: body structures and functions, activity limitations, and participation restrictions
• Clinical decision-making of moderate complexity involving an evolving clinical presentation

The phrase “evolving clinical presentation” in the AMA descriptor is significant for auditors. It signals that the patient’s condition is not static. A patient recovering from a total knee arthroplasty who is developing compensatory hip weakness alongside their primary complaint fits this profile.

A patient with a stable, well-characterized chronic condition presenting without new symptoms likely does not.

The code is classified under Physical Medicine and Rehabilitation Evaluations, specifically within the Physical Therapy Evaluations subsection. It carries no mandatory time requirement, but the AMA’s typical face-to-face time for 97162 is 30 minutes, compared with 20 minutes for 97161 and 45 minutes for 97163.

Those figures describe typical encounters, not billing thresholds. A shorter or longer visit doesn’t change which tier applies — the documented complexity does.

97161 vs 97162 vs 97163: Choosing the right complexity tier

Tier selection is one of the most audited decisions in physical therapy billing. The three codes map to clinical complexity, not time spent. Upcoding to 97163 or undercoding to 97161 both carry compliance risk. Here is how the tiers compare:

The distinction between 97162 and 97163 is the comorbidity count. Two diabetes-related circulation concerns affecting gait rehabilitation fits 97162 — for example, a patient with type 2 diabetes mellitus without complications and a related circulation issue.

Three or more active comorbidities each with documented impact on the plan of care pushes the encounter into 97163 territory. The key documentation test: can the clinician point to specific text in the evaluation note that names each comorbidity and explains how it changes the treatment approach?

97162 vs 97164 is a different question. CPT 97164 covers reevaluations, used when a patient’s condition changes significantly mid-episode of care or when a new condition emerges. It is not interchangeable with the initial evaluation codes. Billing 97164 when the patient never had a 97161-97163 initial evaluation on file will trigger an edit.

Documentation requirements for CPT Code 97162

An audit of a 97162 claim is essentially a documentation audit. APTA guidance is clear that the code tier must be justified by what is written in the evaluation, not by what the therapist performed. If the clinical note does not contain the required elements, the code is unsupported regardless of what occurred in the room.

The regulatory framework physiotherapy practices operate under includes keeping evaluation records that can withstand retrospective review. For 97162 specifically, the evaluation note must demonstrate:

• Chief complaint and history: A narrative of the present problem, including onset, mechanism if applicable, prior functional status, and current functional limitations
• Personal factors and/or comorbidities (1-2): Named conditions that are active, not historical, with a sentence or two explaining how each affects the treatment plan. Example: “Patient has Type 2 diabetes with peripheral neuropathy in bilateral feet, which limits weight-bearing exercise prescription and requires modified balance training protocols.” A comorbidity can also be a device or supply need, such as a patient who requires a powered pressure-reducing mattress overlay for skin integrity, which changes positioning and mobility instructions in the plan of care
• Multi-system examination (3+ elements): Documented standardized tests across at least three assessment elements. Common elements include range of motion measurements, manual muscle testing, sensation testing, balance assessment, gait analysis, and functional outcome measures such as the LEFS, PSFS, or a general health status tool like the 12-item Short Form Survey (SF-12)
• Plan of care: Specific goals tied to measurable functional outcomes, frequency and duration of treatment, and interventions proposed
• Clinical decision-making rationale: A clear connection between findings and the treatment decisions made, demonstrating that clinical judgment was involved

Practices using digital intake forms can build 97162-specific evaluation templates that prompt therapists to document each required element before the note is finalized. This moves the compliance check from after-the-fact chart review to the point of care, where missing documentation is easier to catch.

Modifiers for CPT Code 97162: GP, KX, and 59

Modifier selection for CPT Code 97162 is not optional. The wrong modifier, or a missing one, produces the same result: denial. Three modifiers are relevant to most 97162 claims.

GP modifier (physical therapy services)

The GP modifier is required on every 97162 claim submitted to Medicare for services delivered by or under the supervision of a physical therapist. The GP modifier identifies the claim as a physical therapy service, which triggers the appropriate therapy benefit rules. Without GP, the claim does not route correctly through Medicare’s claims processing system.

State licensing and practice rules can add further documentation requirements on top of the federal modifier rules. See this guidance on physical therapy clinic requirements in Arizona for an example of how one state’s rules intersect with billing documentation — check your own state’s requirements, since they vary.

Occupational therapy uses a separate, parallel code family — CPT 97165, 97166, and 97167 for low, moderate, and high complexity evaluations, with 97168 for OT re-evaluations — and bills with the GO modifier instead of GP. Speech-language pathology uses GN with its own evaluation codes. These modifiers are not interchangeable across disciplines.

KX modifier (medical necessity exception)

When a Medicare beneficiary’s therapy costs approach or exceed the therapy cap threshold for a given year, the KX modifier is appended to indicate that the services are medically necessary and that documentation supporting that necessity is on file.

KX does not automatically approve the claim; it signals to the MAC (Medicare Administrative Contractor) that the clinician attests to the documentation requirement. Missing KX when services exceed the threshold results in automatic claim rejection above the cap amount.

Modifier 59 (distinct procedural service)

When CPT 97162 is billed on the same date as a treatment code such as CPT 97110 (therapeutic exercise) or CPT 97530 (therapeutic activities), NCCI edits may bundle the evaluation with the treatment. Modifier 59 establishes that the evaluation is a distinct service from the treatment.

This modifier should not be used routinely as a default to bypass edits. It requires documentation that the evaluation and treatment were genuinely separate and distinct encounters within the same visit, which is clinically defensible when the evaluation precedes the first treatment session.

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Pabau's claims management software flags missing modifiers, incomplete documentation, and coding errors at submission, not after the denial lands. Physical therapy practices use it to catch missing 97162 modifiers before they become AR problems.

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Reimbursement rates and the Medicare fee schedule for CPT Code 97162

CPT Code 97162 reimbursement is determined by the Medicare Physician Fee Schedule (MPFS), which CMS updates annually. Payment is based on relative value units (RVUs) adjusted by Geographic Practice Cost Indices (GPCIs) for the practice’s locality, so the amount a practice actually collects varies by location.

The national, locality-unadjusted figures below are calculated from CMS’s 2026 RVU release (RVU26A, effective January 1, 2026) using the 2026 conversion factor of $33.4009. Verify locality-specific amounts against the CMS Physician Fee Schedule lookup tool before forecasting revenue.

CMS assigns identical work and practice-expense RVUs to 97161, 97162, and 97163, so all three complexity tiers currently reimburse at the same national rate under the MPFS — a pattern that’s held since the three-tier system replaced 97001 in 2017.

Complexity tier still matters for compliance: it determines which documentation elements an auditor expects to see, even though it doesn’t change what Medicare pays.

Commercial payers aren’t bound by this equal valuation and may price the tiers differently. Medicaid rates vary by state and are typically lower than Medicare. When setting up a physiotherapy practice, negotiating rates for evaluation codes with each commercial payer is a core part of the credentialing process.

Billing guidelines and common errors for CPT Code 97162

Beyond modifier assignment, several billing rules apply specifically to 97162 that practices should have configured as claim scrubbing rules in their physical therapy billing workflow.

One initial evaluation per episode of care

97162 (and the other evaluation codes) is billed once per new episode of care. A patient receiving physical therapy for a shoulder injury who later presents with a separate knee injury constitutes a new episode and a new evaluation.

Billing a second 97162 for the same episode without a significant change in condition or diagnosis is a misuse of the code and triggers edits. If a patient’s condition changes substantially mid-episode, CPT 97164 (reevaluation) is the appropriate code, not a repeat 97162.

Same-day billing with treatment codes

Many practices bill 97162 alongside treatment codes such as 97110 (therapeutic exercise) when the initial evaluation and first treatment session occur on the same day. This is permissible but requires modifier 59 on the treatment code to indicate the services are distinct.

NCCI edits bundle these codes by default. Without the modifier, the payer pays only the higher-value code. AAPC’s Codify is a useful reference for verifying current NCCI edit pairs before submitting bundled claims.

Common denial triggers

• Missing GP modifier on Medicare claims
• Insufficient comorbidity documentation (naming a condition without explaining its impact on the plan of care)
• Body system count below 3 in the examination section
• Vague clinical decision-making (e.g., “patient requires physical therapy” without specifying what clinical findings drove that decision)
• Billing 97162 for a reevaluation instead of 97164
• Missing KX modifier when claims cross the therapy cap threshold
• Diagnosis code mismatch between the ICD-10-CM code on the claim and the condition documented in the evaluation — for example, billing an evaluation for a shoulder condition while the linked diagnosis code on file describes an unrelated joint problem, such as unilateral post-traumatic osteoarthritis of the thumb

Practices managing clinical records in a structured EHR can automate several of these checks. When the evaluation template captures standardized test results as discrete fields rather than free text, the billing system can count documented elements and flag claims where the field count does not match the code’s requirements.

CPT Code 97162 and occupational therapy: The GO modifier distinction

Occupational therapy evaluations don’t use 97162. OT has its own parallel code family: CPT 97165 for low complexity, CPT 97166 for moderate complexity, and CPT 97167 for high complexity, with CPT 97168 reserved for OT re-evaluations.

The GO modifier is correct for occupational therapy, but it attaches to CPT 97166 for a moderate-complexity OT evaluation — the OT parallel to 97162 — not to 97162 itself. Appending GO to 97162 misclassifies the service as occupational therapy delivered under a physical therapy code, which is its own denial trigger.

This distinction matters for practices that provide both PT and OT services. Occupational therapy software workflows, and OT-specific EMR setups, should enforce discipline-specific code and modifier rules to prevent cross-discipline errors on mixed-practice claims.

The documentation framework for 97166 mirrors 97162: 1-2 personal factors or comorbidities affecting the plan of care, examination of three or more body system elements, and moderate clinical decision-making. Only the code, the modifier, and the governing scope-of-practice rules differ by discipline.

Telehealth and CPT Code 97162 after the public health emergency

Telehealth applicability for physical therapy evaluation codes has shifted since the COVID-19 public health emergency (PHE) ended. During the PHE, CMS allowed PT/OT evaluations to be delivered via telehealth. Post-PHE coverage rules have evolved and vary by payer.

Medicare’s current position on telehealth for outpatient physical therapy is subject to annual policy updates, and practices should verify coverage status directly with their MAC and each commercial payer before billing 97162 for a telehealth-delivered evaluation. Assuming PHE-era flexibility still applies is a common billing error that results in claim denial.

How practice management software reduces 97162 billing errors

The documentation and modifier requirements for CPT Code 97162 create multiple points where billing errors can occur: the evaluation note, the code selection, the modifier assignment, and the ICD-10-CM linkage. Each step is a potential failure point if the workflow depends on therapist recall rather than system guardrails.

Pabau’s claims management software supports physical therapy and occupational therapy practices by checking claims for common errors before submission. The platform’s digital documentation tools allow practices to build structured evaluation templates that prompt therapists to complete all required 97162 elements, including comorbidity impact statements and standardized test counts, before signing the note.

The physiotherapy practice management software integrates documentation and billing so that the code selected at the end of the evaluation is cross-checked against the documented elements rather than selected in isolation. It’s one of the reasons Pabau shows up in comparisons of the best physical therapy practice management software on the market.

For practices dealing with audit-readiness, structured clinical records mean that every 97162 claim has a documentation trail that maps directly to each AMA descriptor requirement.

Conclusion

CPT Code 97162 is straightforward in principle but demanding in practice. The moderate complexity tier requires documented comorbidities with a stated plan-of-care impact, examination of at least three body system elements using standardized measures, and the correct modifier stack for every claim. Getting any one of those wrong produces a denial that could have been caught before submission.

Getting 97162 right comes down to combining accurate documentation, the correct modifier, and a billing workflow that catches errors before submission — which is exactly what Pabau’s claims management software and structured evaluation templates are built to do for PT and OT practices.

To see how Pabau supports PT billing workflows, explore Pabau’s automation features that save practices time on routine admin, or book a demo with the team.

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