CPT Code 97164: Re-evaluation of Physical Therapy Established Plan of Care

Understand CPT code 97164 for physical therapy evaluations, including billing, documentation guidelines, modifiers, and frequently asked questions.

Use Code

What is CPT code 97164?

CPT code 97164 refers to a physical therapy (PT) re-evaluation conducted by a physical therapist. It involves reviewing the patient's current medical status, reassessing functional status through standardized tests, and updating the existing physical therapy established plan. Unlike an initial evaluation, the re-evaluation code is used when a patient experiences a significant change in condition, lacks expected progress, or presents new clinical findings that require substantial revision to the plan of care. CPT 97164 typically includes approximately 20 minutes of face-to-face time with the patient or their family and requires documentation that reflects a clear, measurable assessment of the patient's progress.

What is re-evaluation of physical therapy?

A PT re-evaluation involves reassessing a patient’s condition after initial treatment to ensure therapy remains effective and appropriately targeted. The re-evaluation reviews ongoing therapy services, analyzes current clinical findings, revises therapeutic goals if necessary, and updates interventions to reflect significant improvement or address new clinical challenges. This process is essential for adjusting the treatment strategy based on changes in the patient's functional capabilities or underlying condition.

CPT code 97164 documentation requirements

Documentation for CPT 97164 must comprehensively justify the need for a re-evaluation:

Reason for re-evaluation

Clearly document the clinical necessity for re-evaluation, such as a plateau in the patient's progress, worsening of symptoms, or new clinical findings.

Updated patient functional status

Include detailed findings from standardized tests or a standardized patient assessment instrument clearly showing the patient’s current functional limitations compared to previous assessments.

Review and modifications of care plan

Document all revisions made to the physical therapy established plan, specifying changes to therapeutic goals and interventions based on re-assessment findings.

Measurable functional outcomes

Clearly show comparative functional outcome data, such as improvements in mobility, strength, balance, or range of motion (ROM).

Updated therapeutic goals

Set and document revised therapy goals based on the current evaluation results and patient's overall clinical status.

CPT code 97164 billing guidelines

Adhere to these guidelines when billing CPT 97164:

Significant clinical change required

Report 97164 only when there's a medically justified significant change in the patient’s condition, not for routine progress reports or ongoing assessments.

Not strictly time-based

CPT 97164 is not strictly time-based, though the American Medical Association (AMA) and CMS suggest a typical face-to-face duration of approximately 20 minutes.

Frequency of reporting

Generally, billable once per therapy episode unless another distinct re-evaluation becomes clinically necessary due to another significant change in medical status.

GP Modifier requirement

Append the GP modifier, indicating the service was delivered under a physical therapy plan of care. Verify individual payer guidelines on re-evaluation frequency limits.

Applicable modifiers for CPT code 97164

Modifiers clarify specific contexts around billing for PT re-evaluations:

GP Modifier – Physical therapy: Mandatory for all physical therapy services to indicate the procedure was performed under an established physical therapy care plan.
KX Modifier – Medical necessity beyond therapy caps: Indicates services exceeding Medicare’s therapy threshold, requiring documentation supporting continued medical necessity in the patient’s records.
Modifier 59 – Distinct procedural service: Indicates the re-evaluation service is distinct from other therapy services provided on the same day, bypassing NCCI edits when billing additional codes like therapeutic activities (97530).
GA Modifier – ABN on file: Utilized if there's an Advance Beneficiary Notice (ABN) when the provider anticipates Medicare might deny payment due to potential non-coverage based on medical necessity.

Always review individual payer policies to ensure correct modifier usage and avoid claim denials. And remember, CPT 97164 does not apply to services related to an occupational therapy established plan of care because it is only for physical therapy. Use CPT code 97165 for occupational therapy care plans.

Related CPT codes

Relevant CPT codes related to physical therapy practices include:

97165–97167 – Initial evaluations (occupational therapy)
97161–97163 – Initial PT evaluations (low to high complexity)
97110 – Therapeutic exercise
97112 – Neuromuscular re-education
97530 – Therapeutic activities

Frequently asked questions

No. CPT 97164 specifically applies to significant changes requiring re-evaluation, not routine progress notes or standard follow-up assessments.

No, CPT 97164 isn't strictly time-based, though typical duration is around 20 minutes of face-to-face time per AMA and CMS guidelines.

Usually, CPT 97164 can be reported once per therapy episode. However, if another significant change occurs that requires a separate re-evaluation, it can be reported again with appropriate documentation.