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CPT 93923: Noninvasive Arterial Diagnostic Testing

CPT code 93923 covers noninvasive arterial diagnostic procedures that evaluate blood flow and identify blockages in the upper and lower extremity arteries. These tests—such as plethysmography, segmental pressures, and Doppler waveform analysis—are essential in diagnosing peripheral arterial disease and guiding further vascular care. Nationally, such testing informs clinical decision-making for patients with diabetes, peripheral ulcers, claudication, or suspected arterial insufficiency, and supports appropriate use of advanced imaging or revascularization.

Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, common sites of service, and how 93923 relates to adjacent vascular procedure codes (e.g., segmental pressure studies and arterial duplex scans). The publication summarizes common coding relationships and service settings, explains typical clinical indications tied to arterial insufficiency and diabetic circulatory complications, and highlights areas where billing specificity matters (single vs. multi-level studies, upper vs. lower extremity focus).

This resource provides clinicians, coding professionals, and policy analysts a clear, national-level primer on the purpose and clinical role of CPT code 93923, and orients readers to related procedural options and common clinical scenarios prompting arterial diagnostic testing.

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Billing Code Overview

CPT code 93923 describes noninvasive arterial diagnostic procedures used to assess blood flow rates and detect arterial blockages in the upper and lower extremities. Common testing methods under this code include plethysmography, segmental blood pressure measurements, and Doppler waveform analysis.

Service Type: Noninvasive vascular arterial diagnostic testing

Typical Site of Service: Outpatient vascular laboratory, hospital outpatient department, or ambulatory imaging center

National Reimbursement Benchmarks

Nationally, Medicare averages $92.8 for CPT 93923 while BUCA’s commercial mean is $222.7, indicating BUCA pays roughly $130 more on average than Medicare for this service. Blue Cross Blue Shield sits near the high end of commercial means at $289.8, with Cigna and UnitedHealth Group closer to BUCA’s average, and Aetna a step below those peers.

Dispersion measured by the interquartile range (P75−P25) is widest for Blue Cross Blue Shield at $125 (from $220.1 to $326.5) and much narrower for Aetna at $118.9 (from $36.9 to $155.6) and Cigna at $144.1 (from $47.2 to $209.3). UnitedHealth Group’s IQR is $152.1 (from $53.9 to $206.8), while BUCA’s IQR is $123.3 (from $145.5 to $268.3); Medicare’s IQR is $111 (from $22 to $133).

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CPT 93923: Noninvasive Arterial Diagnostic Testing

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Billing Code Overview

Service Type: Noninvasive vascular arterial diagnostic testing

Typical Site of Service: Outpatient vascular laboratory, hospital outpatient department, or ambulatory imaging center

National Reimbursement Benchmarks

National Payer Mean Reimbursement Rates

Clinical & Coding Specifications

Clinical Context

A 68-year-old patient with long-standing type 2 diabetes (E11.59) and progressive exertional leg pain presents to a vascular laboratory for noninvasive arterial testing. The clinician documents claudication of the right calf and a non-healing right thigh ulcer (L97.115). The vascular lab encounter includes review of history and vascular risk factors, focused vascular physical exam (pulses, bruits, skin integrity), and performance of noninvasive arterial diagnostic studies such as segmental blood pressures, plethysmography, and Doppler waveform analysis to evaluate arterial inflow and identify levels of stenosis or occlusion.

The typical clinical workflow: referral from primary care, endocrinology, or podiatry; scheduling in an accredited vascular lab; pre-procedure check for contraindications and laterality; performance of tests by a vascular technologist or sonographer; interpretation by a vascular surgeon, cardiologist, or diagnostic radiologist; and documentation of findings with correlation to the patients symptoms and wound status to guide revascularization planning or conservative management. Common payors for authorization and claims include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when the interpreting physician bills separately from the facility for the professional interpretation of the study.
`TC`	Technical component	Use when the facility bills only for equipment, supplies, and technologist time.
`59`	Distinct procedural service	Use when this arterial study is distinct and separate from another service performed the same day (different anatomical area or unrelated procedure).
`76`	Repeat procedure by same physician	Use when the same test is repeated later the same day by the same clinician/technologist.
`77`	Repeat procedure by another physician	Use when the test is repeated by a different clinician/technologist the same day (note: `77` is not in the provided list; therefore it is excluded).
`52`	Reduced services	Use when the study is partially reduced or not completed as documented (limited exam).
`53`	Discontinued procedure	Use if the procedure is started but then discontinued for patient-related or clinical reasons.
`50`	Bilateral procedure	Use when bilateral testing is performed and payer requires a bilateral modifier rather than separate line items.
`RT`	Right side	Use to indicate services performed on the right extremity.
`LT`	Left side	Use to indicate services performed on the left extremity.
`XE`	Separate encounter	Use when this service is a separate encounter from other services on the same date by the same physician.
`XS`	Separate structure	Use when the study targets a different anatomical structure than another service on the same date.
`XU`	Unusual non-overlapping service	Use when the service is distinct and not normally reported together with another service.
`25`	Significant, separately identifiable E/M service	Use when a documented evaluation and management visit is performed on the same day and is significant and separately identifiable from the diagnostic test.

Taxonomy Code	Specialty	Notes
`207Q00000X`	Radiology—Diagnostic Radiologist	Interprets vascular laboratory studies when performed in radiology environments or when radiologist interpretation is requested.
`207RH0002X`	Cardiovascular Disease—Cardiologist	Interprets and manages arterial testing for peripheral arterial disease and ischemic symptoms.
`2080P0202X`	Surgery—Vascular Surgeon	Interprets studies to plan surgical or endovascular revascularization.
`213E00000X`	Podiatric Medicine & Surgery	Orders and uses arterial testing results for foot and ankle wound management and limb salvage planning.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`E08.51`	Diabetes mellitus due to underlying condition with diabetic peripheral angiopathy without gangrene	Diabetes-related peripheral arterial disease (PAD) is a leading indication for noninvasive arterial studies to assess limb perfusion.
`E08.52`	Diabetes mellitus due to underlying condition with diabetic peripheral angiopathy with gangrene	Used when ischemia has progressed to tissue loss; arterial testing helps determine revascularization potential.
`E08.59`	Diabetes mellitus due to underlying condition with other circulatory complications	Indicates circulatory complications prompting arterial evaluation.
`E09.59`	Drug or chemical induced diabetes mellitus with other circulatory complications	Identifies patients with diabetes-related vascular disease needing arterial assessment.
`E10.59`	Type 1 diabetes mellitus with other circulatory complications	PAD in type 1 diabetes — arterial testing assesses severity and distribution.
`E11.59`	Type 2 diabetes mellitus with other circulatory complications	Common indication for testing due to high PAD prevalence in type 2 diabetes.
`E13.59`	Other specified diabetes mellitus with other circulatory complications	Captures other diabetes types with vascular complications requiring evaluation.
`G45.8`	Other transient cerebral ischemic attacks and related syndromes	While primarily neurologic, vascular studies may be performed when systemic atherosclerotic disease is suspected.
`G54.0`	Brachial plexus disorders	Upper extremity vascular evaluation may be performed when circulatory symptoms overlap with neurologic complaints.
`I70.201`	Unspecified atherosclerosis of native arteries of extremities, right leg	Direct indication for arterial studies to localize atherosclerotic lesions in the right leg.
`I70.202`	Unspecified atherosclerosis of native arteries of extremities, left leg	Direct indication for arterial studies to localize atherosclerotic lesions in the left leg.
`I70.203`	Unspecified atherosclerosis of native arteries of extremities, bilateral legs	Indicates bilateral disease prompting comprehensive bilateral arterial assessment.
`I70.208`	Unspecified atherosclerosis of native arteries of extremities, other extremity	Used for atherosclerosis in non-lower-extremity sites where arterial testing may be indicated.
`I70.211`	Atherosclerosis of native arteries of extremities with intermittent claudication, right leg	Classic symptomatic indication for noninvasive arterial testing to document hemodynamic significance.
`R09.89`	Other specified symptoms and signs involving the circulatory and respiratory systems	Used for atypical circulatory symptoms such as suspected popliteal aneurysm prompting arterial testing.
`L97.115`	Non-pressure chronic ulcer of right thigh limited to breakdown of skin	Non-healing ulcer with suspected ischemic etiology — arterial testing evaluates perfusion for wound management.
`L97.116`	Non-pressure chronic ulcer of right thigh with fat layer exposed	Progressive ulcer severity increases the need for arterial assessment to guide limb salvage.
`L97.118`	Non-pressure chronic ulcer of right thigh with necrosis of muscle	Severe ulceration often requires vascular assessment for revascularization planning.
`L97.125`	Non-pressure chronic ulcer of left thigh limited to breakdown of skin	Left-sided ulcer prompting arterial perfusion evaluation.
`L97.126`	Non-pressure chronic ulcer of left thigh with fat layer exposed	More advanced ulceration on the left requiring vascular assessment.
`L97.128`	Non-pressure chronic ulcer of left thigh with necrosis of muscle	Severe left-sided ulceration where arterial testing informs management decisions.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`93922`	Segmental pressure studies of upper extremity arteries or lower extremity arteries (as appropriate), 2 or more levels	Often performed with or as an adjunct to `93923` when segmental pressure gradients are needed to localize arterial obstruction.
`93924`	Lower extremity arterial evaluation, single level	Used for focused single-level pressure assessments when a limited evaluation suffices instead of multi-level testing.
`93925`	Lower extremity arterial duplex scan (single or bilateral study)	Duplex imaging provides anatomic and hemodynamic information complementary to Doppler waveform analysis performed under `93923`.
`93926`	Lower extremity arterial duplex scan, limited or unilateral	Performed when a targeted duplex study is required for a single limb or limited segment.
`93930`	Upper extremity arterial duplex scan (single or bilateral study)	Equivalent duplex study for the upper extremities when symptoms or ischemia involve the arms.
`93931`	Upper extremity arterial duplex scan, limited or unilateral	Limited upper extremity duplex for focused diagnostic questions.
`93970`	Upper and lower extremity venous duplex scan (single or bilateral study)	Performed when venous pathology is also suspected; may be ordered in the same vascular lab visit.
`93971`	Upper and lower extremity venous duplex scan, limited or unilateral	Limited venous duplex when only one extremity or a single region requires evaluation.

93922 – Noninvasive physiologic studies of upper or lower extremity arteries, single level, bilateral

CPT-93924-LEG-ARTERIAL-EXERCISE-BLOOD-FLOW-ASSESSMENT

CPT 93924: Exercise-Based Leg Arterial Blood Flow Assessment

CPT-93925-BILATERAL-LOWER-EXTREMITY-DUPLEX-ULTRASOUND

CPT 93925: Bilateral Lower-Extremity Duplex Ultrasound

CPT-93926-LOWER-EXTREMITY-DUPLEX-ARTERIAL-ULTRASOUND-ONE-SIDE

CPT 93926: Duplex Ultrasound, Lower Extremity Artery or Bypass (One Side)

CPT-93930-UPPER-EXTREMITY-DUPLEX-ULTRASOUND-BILATERAL

CPT 93930: Duplex Ultrasound of Upper Extremity Arteries, Bilateral

CPT-93931-UPPER-EXTREMITY-ARTERIAL-DUPLEX-UNILATERAL

CPT 93931: Upper Extremity Arterial Duplex, Unilateral

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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Clinical & Coding Specifications

Clinical Context

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when the interpreting physician bills separately from the facility for the professional interpretation of the study.
`TC`	Technical component	Use when the facility bills only for equipment, supplies, and technologist time.
`59`	Distinct procedural service	Use when this arterial study is distinct and separate from another service performed the same day (different anatomical area or unrelated procedure).
`76`	Repeat procedure by same physician	Use when the same test is repeated later the same day by the same clinician/technologist.
`77`	Repeat procedure by another physician	Use when the test is repeated by a different clinician/technologist the same day (note: `77` is not in the provided list; therefore it is excluded).
`52`	Reduced services	Use when the study is partially reduced or not completed as documented (limited exam).
`53`	Discontinued procedure	Use if the procedure is started but then discontinued for patient-related or clinical reasons.
`50`	Bilateral procedure	Use when bilateral testing is performed and payer requires a bilateral modifier rather than separate line items.
`RT`	Right side	Use to indicate services performed on the right extremity.
`LT`	Left side	Use to indicate services performed on the left extremity.
`XE`	Separate encounter	Use when this service is a separate encounter from other services on the same date by the same physician.
`XS`	Separate structure	Use when the study targets a different anatomical structure than another service on the same date.
`XU`	Unusual non-overlapping service	Use when the service is distinct and not normally reported together with another service.
`25`	Significant, separately identifiable E/M service	Use when a documented evaluation and management visit is performed on the same day and is significant and separately identifiable from the diagnostic test.

Taxonomy Code	Specialty	Notes
`207Q00000X`	Radiology—Diagnostic Radiologist	Interprets vascular laboratory studies when performed in radiology environments or when radiologist interpretation is requested.
`207RH0002X`	Cardiovascular Disease—Cardiologist	Interprets and manages arterial testing for peripheral arterial disease and ischemic symptoms.
`2080P0202X`	Surgery—Vascular Surgeon	Interprets studies to plan surgical or endovascular revascularization.
`213E00000X`	Podiatric Medicine & Surgery	Orders and uses arterial testing results for foot and ankle wound management and limb salvage planning.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`E08.51`	Diabetes mellitus due to underlying condition with diabetic peripheral angiopathy without gangrene	Diabetes-related peripheral arterial disease (PAD) is a leading indication for noninvasive arterial studies to assess limb perfusion.
`E08.52`	Diabetes mellitus due to underlying condition with diabetic peripheral angiopathy with gangrene	Used when ischemia has progressed to tissue loss; arterial testing helps determine revascularization potential.
`E08.59`	Diabetes mellitus due to underlying condition with other circulatory complications	Indicates circulatory complications prompting arterial evaluation.
`E09.59`	Drug or chemical induced diabetes mellitus with other circulatory complications	Identifies patients with diabetes-related vascular disease needing arterial assessment.
`E10.59`	Type 1 diabetes mellitus with other circulatory complications	PAD in type 1 diabetes — arterial testing assesses severity and distribution.
`E11.59`	Type 2 diabetes mellitus with other circulatory complications	Common indication for testing due to high PAD prevalence in type 2 diabetes.
`E13.59`	Other specified diabetes mellitus with other circulatory complications	Captures other diabetes types with vascular complications requiring evaluation.
`G45.8`	Other transient cerebral ischemic attacks and related syndromes	While primarily neurologic, vascular studies may be performed when systemic atherosclerotic disease is suspected.
`G54.0`	Brachial plexus disorders	Upper extremity vascular evaluation may be performed when circulatory symptoms overlap with neurologic complaints.
`I70.201`	Unspecified atherosclerosis of native arteries of extremities, right leg	Direct indication for arterial studies to localize atherosclerotic lesions in the right leg.
`I70.202`	Unspecified atherosclerosis of native arteries of extremities, left leg	Direct indication for arterial studies to localize atherosclerotic lesions in the left leg.
`I70.203`	Unspecified atherosclerosis of native arteries of extremities, bilateral legs	Indicates bilateral disease prompting comprehensive bilateral arterial assessment.
`I70.208`	Unspecified atherosclerosis of native arteries of extremities, other extremity	Used for atherosclerosis in non-lower-extremity sites where arterial testing may be indicated.
`I70.211`	Atherosclerosis of native arteries of extremities with intermittent claudication, right leg	Classic symptomatic indication for noninvasive arterial testing to document hemodynamic significance.
`R09.89`	Other specified symptoms and signs involving the circulatory and respiratory systems	Used for atypical circulatory symptoms such as suspected popliteal aneurysm prompting arterial testing.
`L97.115`	Non-pressure chronic ulcer of right thigh limited to breakdown of skin	Non-healing ulcer with suspected ischemic etiology — arterial testing evaluates perfusion for wound management.
`L97.116`	Non-pressure chronic ulcer of right thigh with fat layer exposed	Progressive ulcer severity increases the need for arterial assessment to guide limb salvage.
`L97.118`	Non-pressure chronic ulcer of right thigh with necrosis of muscle	Severe ulceration often requires vascular assessment for revascularization planning.
`L97.125`	Non-pressure chronic ulcer of left thigh limited to breakdown of skin	Left-sided ulcer prompting arterial perfusion evaluation.
`L97.126`	Non-pressure chronic ulcer of left thigh with fat layer exposed	More advanced ulceration on the left requiring vascular assessment.
`L97.128`	Non-pressure chronic ulcer of left thigh with necrosis of muscle	Severe left-sided ulceration where arterial testing informs management decisions.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`93922`	Segmental pressure studies of upper extremity arteries or lower extremity arteries (as appropriate), 2 or more levels	Often performed with or as an adjunct to `93923` when segmental pressure gradients are needed to localize arterial obstruction.
`93924`	Lower extremity arterial evaluation, single level	Used for focused single-level pressure assessments when a limited evaluation suffices instead of multi-level testing.
`93925`	Lower extremity arterial duplex scan (single or bilateral study)	Duplex imaging provides anatomic and hemodynamic information complementary to Doppler waveform analysis performed under `93923`.
`93926`	Lower extremity arterial duplex scan, limited or unilateral	Performed when a targeted duplex study is required for a single limb or limited segment.
`93930`	Upper extremity arterial duplex scan (single or bilateral study)	Equivalent duplex study for the upper extremities when symptoms or ischemia involve the arms.
`93931`	Upper extremity arterial duplex scan, limited or unilateral	Limited upper extremity duplex for focused diagnostic questions.
`93970`	Upper and lower extremity venous duplex scan (single or bilateral study)	Performed when venous pathology is also suspected; may be ordered in the same vascular lab visit.
`93971`	Upper and lower extremity venous duplex scan, limited or unilateral	Limited venous duplex when only one extremity or a single region requires evaluation.

93922 – Noninvasive physiologic studies of upper or lower extremity arteries, single level, bilateral

CPT-93924-LEG-ARTERIAL-EXERCISE-BLOOD-FLOW-ASSESSMENT

CPT 93924: Exercise-Based Leg Arterial Blood Flow Assessment

CPT-93925-BILATERAL-LOWER-EXTREMITY-DUPLEX-ULTRASOUND

CPT 93925: Bilateral Lower-Extremity Duplex Ultrasound

CPT-93926-LOWER-EXTREMITY-DUPLEX-ARTERIAL-ULTRASOUND-ONE-SIDE

CPT 93926: Duplex Ultrasound, Lower Extremity Artery or Bypass (One Side)

CPT-93930-UPPER-EXTREMITY-DUPLEX-ULTRASOUND-BILATERAL

CPT 93930: Duplex Ultrasound of Upper Extremity Arteries, Bilateral

CPT-93931-UPPER-EXTREMITY-ARTERIAL-DUPLEX-UNILATERAL

CPT 93931: Upper Extremity Arterial Duplex, Unilateral

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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CPT 93923: Noninvasive Arterial Diagnostic Testing

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Billing Code Overview

National Reimbursement Benchmarks

OpenPayer

CPT 93923: Noninvasive Arterial Diagnostic Testing

Sign up for cpt 93923 policy alerts

Billing Code Overview

National Reimbursement Benchmarks

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

References

CPT 93923: Noninvasive Arterial Diagnostic Testing

Sign up for cpt 93923 policy alerts

Billing Code Overview

National Reimbursement Benchmarks

CPT 93923: Noninvasive Arterial Diagnostic Testing

Sign up for cpt 93923 policy alerts

Billing Code Overview

National Reimbursement Benchmarks

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

What are the typical reimbursement rates for CPT 93923 across payers?

Which modifiers are commonly used with CPT 93923 and when are they applied?

What clinical scenarios and workflows commonly lead to ordering CPT 93923?

How does CPT 93923 relate to other vascular procedure codes listed on the page?

Which specialties typically interpret or order CPT 93923 and which payers are commonly involved?

References

Clinical & Coding Specifications

Clinical Context

Coding Specifications

Related Diagnoses

Related CPT Codes

Related Codes

What are the typical reimbursement rates for CPT 93923 across payers?

Which modifiers are commonly used with CPT 93923 and when are they applied?

What clinical scenarios and workflows commonly lead to ordering CPT 93923?

How does CPT 93923 relate to other vascular procedure codes listed on the page?

Which specialties typically interpret or order CPT 93923 and which payers are commonly involved?

References