Summary & Overview
HCPCS G9266: Maintenance Hemodialysis ≥90 Days Without Catheter
HCPCS Level II code G9266 denotes maintenance hemodialysis for patients who have received treatment for 90 days or more using a non‑catheter vascular access. The code captures long‑term dialysis status tied to vascular access type, a clinically meaningful distinction that affects care coordination, quality reporting, and resource allocation across outpatient dialysis settings. Nationally, clarity in coding for vascular access supports quality measurement and payment pathways for chronic kidney disease management.
Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of payer coverage patterns, how G9266 aligns with clinical documentation and facility reporting, and benchmarks relevant to maintenance dialysis coding. The publication highlights clinical context—specifically the 90‑day threshold and non‑catheter access status—plus implications for service lines in outpatient dialysis centers.
The report provides actionable reference material: code definition and use cases, typical site of service, common modifiers and payer interactions where available, and guidance on where to find additional billing resources. Data not available in the input is noted when applicable. This summary is intended for national audiences including billing professionals, dialysis program administrators, and policy analysts.
Billing Code Overview
HCPCS Level II code G9266 indicates a patient receiving maintenance hemodialysis for greater than or equal to 90 days without a catheter as the mode of vascular access. This service represents ongoing outpatient maintenance dialysis care for patients using a non-catheter vascular access (such as an arteriovenous fistula or graft) after at least 90 days of treatment.
Service type: Maintenance hemodialysis therapy
Typical site of service: Outpatient dialysis center or facility providing maintenance hemodialysis
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with end-stage kidney disease (ESKD) has been receiving maintenance in-center hemodialysis via a mature arteriovenous fistula for 18 months. The patient attends thrice-weekly dialysis sessions at a hospital-affiliated outpatient dialysis center. Typical workflow includes vascular access assessment by the dialysis nurse at each session (inspection, palpation, auscultation), pre-dialysis weight and vital signs, needle cannulation of the fistula by a trained dialysis nurse or technician under the supervision of a nephrology provider, monitoring of dialysis machine parameters and hemodynamic stability during the treatment, and post-dialysis access site care and documentation. Periodic evaluation by the nephrologist includes access surveillance (physical exam, flow measurements, and referral for imaging or intervention when stenosis, low flow, or recurrent clotting is suspected). This billing code, G9266, is used to report that the patient is receiving maintenance hemodialysis for greater than or equal to 90 days and the vascular access is not a catheter (for example, an arteriovenous fistula or graft). Typical sites of service are outpatient dialysis centers, hospital outpatient departments, and long-term care facilities when dialysis is performed on an ongoing maintenance basis. Common clinical scenarios include patients stabilized on chronic hemodialysis after initiation of renal replacement therapy, transitioning from catheter-based access to permanent access, or long-term dialysis care for chronic kidney failure with an established fistula or graft.
Coding Specifications
| Modifier | Description | When to Use |
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