Low-complexity physical therapy evaluation covering a history with no or minimal comorbidities affecting the plan of care, examination of 1–2 elements (body structures/functions, activity limitations, and/or participation restrictions), a stable and uncomplicated clinical presentation, and low-complexity clinical decision-making. Typically 20 minutes face-to-face.

Verified May 8, 2026 · 6 sources ↓

Medicare: $97.86
Total RVUs: 2.93
Global, days
Region: General

Drawn from BtetechnologiesAptaCMSAAPCPracticeperfectemr

Documentation requirements

What must appear in the operative or office note to support the claim.

Source · Editorial brief grounded in 6 cited references ↓

History documenting no or minimal personal factors and/or comorbidities that affect the plan of care
Examination identifying 1–2 elements across body structures/functions, activity limitations, and/or participation restrictions using standardized tests and measures
Clinical presentation narrative explicitly describing stable and uncomplicated characteristics — not just the diagnosis
Clinical decision-making section demonstrating low complexity, referencing standardized patient assessment instruments or measurable functional outcome scores
Initial treatment plan with goals derived from the evaluation findings
Face-to-face time documented in the note (typically 20 minutes; time is descriptive, not determinative for code selection)

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 52 Reduced services 59 Distinct service KX Documentation on file XS Separate structure

What this code covers

Source · Editorial summary grounded in 6 cited references ↓

97161 is the entry-level tier in the three-code PT evaluation family (97161–97163) introduced in 2017 to replace the single legacy code 97001. Code selection turns on complexity, not time. To land on 97161, all four components must fit the low-complexity threshold: history reflects no or minimal personal factors or comorbidities impacting care; the exam addresses only 1–2 elements from body structures/functions, activity limitations, or participation restrictions; the clinical presentation is stable and uncomplicated; and clinical decision-making is low complexity, supported by standardized assessment instruments or measurable functional outcome tools.

The critical selection rule: if even one component meets low-complexity criteria, the entire evaluation is coded 97161 regardless of whether other components might otherwise point toward 97162 or 97163. That means upcoding to 97162 requires all four components to clear the moderate threshold simultaneously. Auditors look for exactly this — documentation that shows one component barely qualifying as moderate while the rest are clearly low-complexity.

Medicare currently reimburses 97161, 97162, and 97163 at the same rate. That parity makes complexity-level accuracy a compliance and audit issue more than a reimbursement one. Workers' comp and auto liability carriers may still require legacy code 97001; verify payer-specific requirements before submitting. The CQ modifier applies when a physical therapist assistant provides services in whole or in part under Medicare.

RVU & reimbursement

Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	1.54
Practice expense RVU	1.38
Malpractice RVU	0.01
Total RVU	2.93
Medicare national rate	$97.86
Global period	days

Payment by site of service

Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.

Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026

Setting	Medicare rate (national)
Office (PFS non-facility) Procedure performed in physician's office	$97.86

Common denial reasons

The recurring reasons claims for CPT 97161 get rejected.

Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓

Documentation supports a higher complexity level (97162/97163) but 97161 was billed — or vice versa — triggering a complexity mismatch on audit
Missing or vague clinical presentation language: notes that don't explicitly state 'stable and uncomplicated' give reviewers grounds to question medical necessity
Evaluation billed on the same date as a treatment service without adequate documentation that the evaluation and treatment are separately identifiable
Failure to use or reference standardized tests and measures required to support low-complexity clinical decision-making
Workers' comp or auto liability claims submitted with 97161 when those payers still require legacy code 97001

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 6 cited references ↓

01Can I bill 97161 and a treatment code (e.g., 97110) on the same date?

Yes, but the evaluation and treatment must be separately identifiable in the documentation. Medicare and most commercial payers allow same-day evaluation and treatment; ensure the note clearly delineates what occurred during the eval versus the therapeutic intervention.

02Does 97161 require exactly 20 minutes to bill?

No. Twenty minutes is descriptive — it reflects typical time but does not determine code selection. Complexity of the four required components (history, examination, clinical presentation, clinical decision-making) drives code choice, not time spent.

03If a patient has one comorbidity, does that automatically push me to 97162?

Not automatically. The question is whether that comorbidity impacts the plan of care. A well-controlled chronic condition that doesn't change your clinical decision-making can still support 97161. Document specifically why the comorbidity does or does not affect the plan.

04Does Medicare pay more for 97162 or 97163 than for 97161?

No. Medicare currently reimburses all three PT evaluation codes at the same rate. The distinction still matters for compliance: upcoding to 97162 or 97163 when documentation supports 97161 is an audit risk even if there's no short-term reimbursement incentive.

05When is the KX modifier required on 97161?

Append KX when the patient has reached or is about to reach the Medicare therapy cap threshold and you are attesting that the services are medically necessary and exceed the cap. Without KX at that point, the claim will reject.

06Can a physical therapist assistant (PTA) perform the 97161 evaluation under Medicare?

No. Medicare requires the initial evaluation to be performed by the supervising physical therapist, not a PTA. If a PTA performs any portion of a subsequent treatment session, the CQ modifier applies to those treatment codes.

07Should I use 97161 or 97001 for a workers' comp patient?

Verify with the specific workers' comp carrier. Some still require legacy code 97001 rather than the 97161–97163 tiered codes. Submitting 97161 to a carrier expecting 97001 will typically result in denial or incorrect payment.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

Mira AI Scribe

Mira's AI scribe captures all four complexity components from dictation: comorbidity and personal factor status from the history, the specific number and type of elements examined (joint ROM, strength, gait, mobility, neuromuscular function), explicit language about clinical presentation stability, and the standardized assessment instruments or functional outcome measures used in clinical decision-making. This prevents the most common 97161 audit flag — documentation that describes a stable patient but omits the standardized measure required to justify low-complexity decision-making.

See how Mira captures CPT 97161 documentation