CPT 36904 Dialysis Circuit Thrombectomy Reimbursement

CPT code 36904 represents a fluoroscopically guided endovascular procedure to remove or dissolve blood clots from a dialysis circuit, including diagnostic angiography and radiological supervision and interpretation. This service is clinically important because thrombosis of dialysis access can cause dialysis interruption, catheter failure, and increased morbidity among patients dependent on hemodialysis. Timely endovascular intervention preserves access function and reduces the need for new access creation or hospital admission.

Key national payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of coverage and billing considerations across these payers, typical sites of service and clinical context for use of the code, and comparative benchmarks where available. The publication summarizes procedural scope, common clinical scenarios prompting use of the code, and coding relationships relevant for billing teams and policy analysts. Data not available in the input is noted where payer-specific policy details, associated taxonomies, and ICD-10 diagnoses would normally be provided.

Billing Code Overview

CPT code 36904 describes a fluoroscopically guided thrombectomy and/or pharmacological thrombolytic injection of a clot within a dialysis circuit, performed through catheter introduction into a vascular access (the dialysis circuit). The procedure includes diagnostic angiography and radiological supervision and interpretation as part of the service.

Service type: Image-guided endovascular thrombectomy and pharmacologic thrombolysis of a dialysis circuit access
Typical site of service: Hospital interventional radiology suite or outpatient endovascular/vascular access procedural area where fluoroscopic imaging and angiographic equipment are available.

Clinical Context

A 62-year-old patient with end-stage renal disease presents to the interventional radiology suite with an acutely thrombosed arteriovenous fistula used for hemodialysis. The patient reports decreased thrill and inability to complete dialysis sessions. Under fluoroscopic guidance, the interventional radiologist or vascular surgeon performs diagnostic angiography of the dialysis circuit to localize the thrombus, introduces a catheter into the fistula or graft, and performs mechanical thrombectomy and/or pharmacologic thrombolytic infusion to restore patency. Radiological supervision and interpretation are provided throughout. The procedure is typically performed in an outpatient interventional radiology or hospital angiography suite with conscious sedation and local anesthesia; post-procedure monitoring assesses flow restoration and hemostasis before discharge or admission for observation if complications occur.

Coding Specifications

Modifier	Description	When to Use
`11`	Professional Component	When reporting only the physician’s professional work if the technical component is billed separately (rare for this code).
`22`	Increased Procedural Services	When work required is substantially greater than usual (documented increased complexity).

Taxonomy Code	Specialty	Notes
207RG0200X	Interventional Radiology	Primary specialty performing fluoroscopic vascular thrombectomy and angiography.
2080P0222X	Vascular Surgery	Often performs dialysis access thrombectomy and associated access repair.
207K00000X	Diagnostic Radiology	May provide diagnostic angiography and interpretation in the vascular access setting.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I97.1`	Complications of vascular prosthetic devices, implants and grafts	Applies when thrombosis involves a graft used for dialysis access.
`T82.89XA`	Other complications of cardiac and vascular prosthetic devices, implants and grafts, initial encounter	Used for complications of vascular access devices such as thrombosis requiring intervention.
`I82.4`	Acute embolism and thrombosis of unspecified deep veins of lower extremity	Represents acute thrombosis in venous structures that may affect access or require thrombectomy when access involves venous segments.
`I74.3`	Embolism and thrombosis of arteries of lower extremities	Relevant if arterial thrombotic events are encountered during angiography or access procedures.
`N18.6`	End stage renal disease	Primary underlying condition necessitating chronic dialysis and creation/use of vascular access subject to thrombosis.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`75894`	Injection procedure during endovascular imaging, radiological supervision and interpretation (hand-injection or power injector for contrast)	Used for the angiographic contrast injections that accompany diagnostic angiography of the dialysis circuit.
`36901`	Thrombolysis, open or percutaneous, dialysis circuit; including diagnostic angiography, radiological supervision and interpretation, initial thrombectomy/thrombolysis	Related dialysis access intervention codes for initial or simple access thrombectomy — may be used in conjunction or for different access types.
`36465`	Endovenous thermal ablation of incompetent vein, complete — single treatment area	May be performed in the same vascular suite when venous interventions for access are required, though different clinical indications.
`76937`	Ultrasound guidance for vascular access requiring image documentation, percutaneous; unilateral	Often used for ultrasound-guided needle or catheter placement into the dialysis circuit prior to fluoroscopic intervention.
`99152`	Moderate sedation services provided by the same physician performing the procedure, initial 15 minutes	Billed when the physician providing the thrombectomy also administers and monitors moderate (conscious) sedation during the procedure.

OpenPayer

Summary & Overview

CPT 36904: Dialysis Circuit Thrombectomy and Pharmacologic Thrombolysis