Summary & Overview
HCPCS G9327: CT Radiation Dose Registry Reporting
HCPCS Level II code G9327 denotes reporting of CT studies to a radiation dose index registry that can capture at least the required data elements. This code signals facility participation in dose-tracking and quality reporting efforts tied to computed tomography imaging. Nationally, registry reporting supports patient safety, radiation dose optimization, and compliance with payer and regulatory quality initiatives.
Key payers considered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the code's clinical context, the service settings where it is used, and the implications for billing and quality measurement across major payers. The publication summarizes benchmarks and common billing practices where available, notes relevant policy updates affecting registry-based reporting, and outlines the operational contexts in which G9327 is typically applied.
This material addresses facility-level reporting obligations and the intersection of imaging quality programs with payer requirements. Data not available in the input are noted where applicable.
Billing Code Overview
HCPCS Level II code G9327 represents CT studies that are reported to a radiation dose index registry capable of collecting, at a minimum, all necessary data elements. The service type is radiology quality reporting / registry data submission for computed tomography. The typical site of service is hospital outpatient imaging departments, freestanding radiology centers, and other facilities performing CT imaging.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A patient presenting for routine or problem-focused computed tomography (CT) imaging at an outpatient imaging center or hospital radiology department undergoes CT acquisition. The facility participates in a radiation dose index registry and submits CT dose metrics (for example, CTDIvol, DLP, scanner model, acquisition parameters) to the registry capable of collecting all required data elements. Typical scenario: an adult patient referred for chest CT for evaluation of suspected pulmonary embolism or lung disease; technologist documents acquisition parameters, the facility’s IT system exports dose reports, and a medical physicist or quality lead validates the data before secure transmission to the registry. The service is facility-level and billed after verification that the CT study’s dose indices were reported to the qualified registry that meets registry data-element requirements.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Unusual procedural work or extended post-processing related to CT beyond standard practice when documented |
23 | Unusual anesthesia | Use when general anesthesia or deep sedation was required for the CT acquisition and documented |