CPT 93990 Duplex Ultrasound Reimbursement | OpenPayer

Summary & Overview

CPT 93990: Duplex Ultrasound Assessment of Hemodialysis Graft

CPT code 93990 denotes a duplex ultrasound assessment of blood flow through a hemodialysis graft. This diagnostic vascular ultrasound procedure is used to evaluate graft patency and detect stenosis or other flow-limiting abnormalities that can compromise dialysis access. Nationally, such imaging plays a central role in maintaining functional vascular access for patients receiving hemodialysis and can influence care pathways and downstream interventions.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical purpose, typical sites of service, and the clinical context in which the procedure is ordered. The publication highlights common modifiers associated with billing practices, discusses how the code fits into vascular access management workflows, and outlines the policy landscape and benchmark considerations that affect coverage and reimbursement. Where specific input fields were not provided, the report notes that data are not available in the input.

This piece is written for a national audience of clinicians, billing professionals, and policy analysts seeking a clear summary of the code’s clinical use, payer relevance, and the types of operational and policy issues that commonly arise around diagnostic evaluation of hemodialysis grafts.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 93990duplex ultrasoundhemodialysis graftvascular accessdiagnostic imagingambulatory carereimbursement policybilling guidance

Billing Code Overview

CPT code 93990 describes a duplex ultrasound assessment of blood flow through a hemodialysis graft. The procedure involves real-time ultrasound imaging combined with Doppler flow assessment to evaluate graft patency, inflow and outflow characteristics, and to identify stenosis or other abnormalities.

Service type: Diagnostic vascular ultrasound service

Typical site of service: Outpatient vascular laboratory or dialysis center (ambulatory setting)

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 58-year-old patient with end-stage renal disease and a recently created arteriovenous graft presents with declining dialysis adequacy and suspected graft dysfunction. The dialysis team reports difficulty achieving target blood flows during hemodialysis sessions and recurring high venous pressures. The nephrologist orders a duplex ultrasound of the hemodialysis graft to evaluate access patency, detect stenosis, thrombosis, pseudoaneurysm, or perigraft fluid, and to assess arterial inflow and venous outflow velocities.

The patient arrives to an outpatient vascular laboratory or hospital-based vascular ultrasound suite. A registered vascular sonographer performs a focused duplex scan of the graft, including B-mode imaging, color Doppler, and spectral Doppler measurements of inflow and outflow segments and the venous anastomosis. Images and velocity recordings are reviewed by a vascular medicine or interventional radiology provider who documents the findings and directs further management such as angiography, thrombectomy, angioplasty, or continued surveillance. Typical sites of service are outpatient vascular labs, hospital outpatient departments, and dialysis center-based vascular access clinics. The service type is a diagnostic vascular ultrasound of a hemodialysis graft to assess blood flow and structural abnormalities using duplex scanning (93990).

Coding Specifications

Modifier	Description	When to Use
`26`

CPT 93986: Upper Extremity Arterial and Venous Duplex for Pre-Dialysis Access

CPT-93985-UPPER-EXTREMITY-VASCULAR-DUPLEX-FOR-HEMODIALYSIS-ACCESS

CPT 93985: Bilateral Upper Extremity Vascular Duplex for Hemodialysis Access

Taxonomy Code	Specialty	Notes
`2080P0206X`	Vascular Surgery	Common providers who interpret and manage hemodialysis access evaluations.
`2080S0123X`	Interventional Radiology	Providers who perform diagnostic and therapeutic procedures on grafts after duplex assessment.
`207RP1001X`	Nephrology	Clinicians who order and act on duplex results for dialysis access management.
`367A00000X`	Diagnostic Radiology	Radiologists who may interpret vascular ultrasound studies.
`176B00000X`	Cardiology	Vascular medicine-trained cardiologists who sometimes evaluate graft flow.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I12.9`	Hypertensive chronic kidney disease with stage 1-4 chronic kidney disease, or unspecified	Hypertension-related CKD is a common cause of ESRD requiring hemodialysis and graft access surveillance.
`N18.6`	End stage renal disease	Primary population receiving hemodialysis grafts; graft function surveillance is routine.
`T82.5XXA`	Mechanical complication of vascular prosthetic devices, initial encounter	Used when prosthetic graft complications such as stenosis or thrombosis are suspected and evaluated by duplex.
`I87.2`	Venous insufficiency (chronic)	Venous outflow abnormalities can affect graft function and are evaluated by duplex.
`I65.2`	Occlusion and stenosis of precerebral arteries (note: not typical)	Data not available in the input.
`N17.9`	Acute kidney failure, unspecified	Acute changes in dialysis adequacy prompting graft evaluation may coincide with acute kidney issues.
`Z99.2`	Dependence on renal dialysis	Denotes patients chronically dependent on dialysis who require access surveillance.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`93990`	Duplex scan of hemodialysis graft to assess blood flow (study described)	Primary diagnostic duplex evaluation of graft flow.
`93971`	Duplex scan of extremity arteries, complete bilateral study	Performed if arterial inflow disease is suspected contributing to graft dysfunction.
`93976`	Duplex scan of extremity veins, follow-up or limited study	Performed when venous outflow obstruction or central venous stenosis is suspected.
`36147`	Introduction of catheter, dialysis, therapeutic, arterial and venous	May be performed if immediate endovascular access intervention follows diagnostic imaging.
`36902`	Endovascular thrombectomy, dialysis access, non-covered stent (unlisted specifics vary)	Therapeutic procedure often performed after duplex demonstrates thrombosis of a graft.
`36011`	Introduction of needle or catheter into a dialysis access for injection or diagnostic studies	Performed when operative or interventional evaluation (angiography) is required after duplex findings.

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