Summary & Overview
HCPCS G0120: Colorectal Cancer Screening Alternative
HCPCS Level II code G0120 designates a colorectal cancer screening test offered as an alternative to colonoscopy or barium enema. This code is used for non-invasive screening approaches provided in outpatient or ambulatory settings and plays a role in national efforts to increase preventive screening and early detection of colorectal cancer. Coverage policies and utilization of G0120 affect screening access, preventive care metrics, and downstream diagnostic services.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of payer coverage patterns, common billing practices, and where G0120 fits into clinical screening pathways. The publication summarizes benchmark measures, relevant policy updates that influence reimbursement and coverage decisions, and clinical context about alternatives to colonoscopy.
The report highlights benchmarks for utilization and payment (where available), outlines common modifier usage and billing considerations, and summarizes implications for providers and health systems in delivering guideline-concordant colorectal cancer screening. Data not available in the input will be identified as such.
Billing Code Overview
HCPCS Level II code G0120 describes colorectal cancer screening as an alternative to G0105, screening colonoscopy, or barium enema. The service is a non-invasive colorectal cancer screening procedure intended for screening-eligible patients.
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Service type: Colorectal cancer screening alternative screening test
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Typical site of service: Outpatient clinic or ambulatory screening setting
Clinical & Coding Specifications
Clinical Context
A 62-year-old average-risk patient presents to an outpatient ambulatory surgical center for colorectal cancer screening using a non-invasive alternative to screening colonoscopy. The patient has no active gastrointestinal symptoms, no prior history of colorectal cancer or polyps, and insurance coverage requires screening documentation. The clinical workflow: the primary care provider orders colorectal cancer screening; the patient receives pre-procedure instructions and completes any required bowel preparation if applicable for imaging. On the day of service, the patient registers at the ambulatory imaging or outpatient clinic; vital signs and consent are obtained. A qualified clinical staff member performs the designated colorectal cancer screening test represented by G0120 (an alternative screening method to a screening colonoscopy or barium enema). If the test returns positive or inconclusive, the patient is referred for diagnostic colonoscopy. Results are documented in the medical record and transmitted to the ordering provider. Billing is submitted under HCPCS Level II code G0120 with appropriate modifier(s) to indicate professional or technical components, circumstances, or provider-specific details.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component |