Summary & Overview
HCPCS G9326: CT Studies Not Reported to Dose Index Registry
HCPCS Level II code G9326 denotes diagnostic CT studies that were performed but not reported to a radiation dose index registry that can collect all required data elements, with no reason given. Nationally, this code is used in contexts where dose reporting obligations exist — such as regulatory programs, accreditation requirements, or payer policies — and nonreporting may affect compliance tracking and quality measurement. The code provides an audit trail for examinations lacking a completed dose-index submission.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a national overview of the code's clinical and administrative purpose, typical sites of service where the code is applied, common modifiers associated with related imaging claims (listed in the metadata), and guidance on the kinds of benchmarks and policy updates relevant to dose-index reporting programs.
This publication explains how G9326 is used in billing workflows, what implications nonreporting has for registry-based quality measurement, and where to look for payer- or program-specific rules. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code G9326 represents CT studies that were performed but not reported to a radiation dose index registry capable of collecting at a minimum all necessary data elements, with the reason for nonreporting not provided. This code applies to diagnostic computed tomography (CT) examinations where required dose-index data reporting to an applicable registry was not completed.
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Service type: Diagnostic CT imaging studies
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Typical site of service: Outpatient imaging centers, hospital outpatient departments, and other settings where CT examinations are performed
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient with acute flank pain presents to an outpatient radiology center for a non-contrast computed tomography (CT) of the abdomen and pelvis to evaluate suspected nephrolithiasis. The CT technologist performs the exam using the facility CT scanner and the imaging is interpreted by a radiologist. The imaging facility is required by payer or regulatory policy to submit CT dose and technical parameters to a qualified radiation dose index registry that can collect the mandated data elements. In this scenario the facility does not report the CT study to a registry capable of collecting the required data elements and no reason is recorded on the submission. Billing uses HCPCS Level II code G9326 to indicate a CT study performed but not reported to an appropriate radiation dose index registry, reason not given. Typical workflow points where this code is applied include final billing at the facility when registry submission status is tracked, communication between billing and quality/CT dosimetry staff, and claims submission to payors where registry reporting is a condition of payment or quality programs. Typical site of service is an outpatient radiology imaging center or hospital outpatient department where CT exams are routinely performed and subject to dose reporting requirements. Patient consent and clinical care are unaffected by this administrative coding element; it documents lack of registry reporting for quality and billing purposes.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 |