CPT Code 97165: Occupational Therapy Evaluation, Low Complexity

What is a low-complexity physical therapy evaluation?

A low-complexity occupational therapy evaluation involves a focused assessment typically suitable for patients with uncomplicated conditions and minimal functional limitations. It includes reviewing the patient’s medical history, evaluating up to three areas of physical, cognitive, or psychosocial skills, and formulating a simple treatment plan.

This evaluation level generally addresses routine conditions requiring basic clinical decision-making and minimal intervention, supporting overall improvement in patient function and participation.

CPT code 97165 documentation requirements

Understanding the occupational therapy evaluation CPT code 97165 means knowing what its documentation requirements are. Accurate documentation for occupational therapy evaluation CPT 97165 must include:

Occupational profile and client history

Clearly document the patient's occupational profile, including relevant medical and therapy history. Indicate that the patient's medical history presents no significant personal factors or comorbidities affecting the evaluation's complexity.

Objective testing and functional deficits

Record results from objective testing (e.g., standardized tests) demonstrating 1–3 mild occupational performance deficits, such as limitations in range of motion (ROM), coordination, or psychosocial interactions affecting daily activities.

Clinical decision-making

Note explicitly that the occupational therapist's clinical judgment was of low complexity, reflecting straightforward clinical decision-making based on patient assessment findings.

Time spent

Although CPT 97165 isn't strictly time-based, document the typical face-to-face duration, usually about 30 minutes, according to CMS guidelines.

Initial treatment goals and plan of care

Include clearly defined initial goals and a basic treatment plan supported by evaluation findings, ensuring the medical record supports medical necessity.

CPT code 97165 billing guidelines

When billing therapy evaluation CPT code 97165 in your clinical practice, follow these guidelines:

Report once per episode

Bill CPT 97165 only once per episode of care per occupational therapist, typically at the initial evaluation.

Criteria for low-complexity evaluation

Use CPT 97165 exclusively when the patient meets all criteria: straightforward patient history, minimal impairments (1–3 areas), and low-complexity clinical decision-making.

Do not combine with other evaluation codes

Do not bill 97165 simultaneously with moderate or high complexity evaluation codes (97166–97167) or additional evaluative service codes.

Typical duration

The evaluation is not strictly time-based, but the typical completion time is around 30 minutes.

Modifier requirements

Most payers require discipline-specific therapy modifiers, such as the GO modifier for occupational therapy. Ensure your documentation and claims clearly reflect the appropriate modifiers.

Applicable modifiers for CPT code 97165

Modifiers clarify specifics around the occupational therapy service. Most payers require discipline-specific therapy modifiers, such as the GO modifier for occupational therapy.

Here are some modifiers that apply to CPT code 97165:

• GO – Occupational therapy services: Use this required modifier to clearly indicate that the evaluation or treatment was provided as part of an outpatient occupational therapy plan of care. Most payers, including Medicare, mandate the use of modifier GO for occupational therapy services. Claims without this modifier typically face rejection or denial.
• KX – Services exceeding therapy cap thresholds: Apply this modifier when therapy services surpass Medicare’s financial threshold (therapy cap). The KX modifier confirms the service remains medically necessary and is well-supported by detailed documentation in the patient's medical record.
• CO – Occupational therapy assistant: Append modifier CO if an occupational therapy assistant (OTA), rather than a licensed occupational therapist (OT), delivered the service in whole or part. Medicare and other payers use this modifier to apply specific reimbursement adjustments or compliance requirements.
• CQ – Physical therapist assistant: While typically relevant for physical therapy services, modifier CQ might occasionally be applicable in multidisciplinary settings where a physical therapist assistant (PTA) provides part of the care. Although rare in OT-only scenarios, verify specific payer guidelines if applicable.
• 59 – Distinct procedural service: Use modifier 59 to indicate that the occupational therapy evaluation was distinct from other procedures or services performed during the same encounter, ensuring clear differentiation to avoid claim denials.
• GP – Physical therapy: Modifier GP specifically identifies physical therapy services. Although rarely applicable to OT evaluations (CPT 97165), it may be needed in settings involving multidisciplinary billing or dual-discipline scenarios.
• Medicare X-modifiers XE, XP, XS, XU: These modifiers provide more precise alternatives to modifier 59 and may be required by Medicare or other payers in specific scenarios:
  • XE: Separate encounter (distinct evaluation session)
  • XP: Separate practitioner (distinct OT from other disciplines)
  • XS: Separate structure (different body area evaluated)
  • XU: Unusual non-overlapping service (different service distinctly identifiable from others performed)

Related CPT codes

Explore related occupational therapy evaluation codes:

• 97166 – Moderate complexity occupational therapy evaluation
• 97167 – High complexity occupational therapy evaluation
• 97110 – Therapeutic exercise (common OT/PT intervention)
• 97530 – Therapeutic activities improving functional performance
• 97535 – Self-care/home management training (ADLs)