G0328 HCPCS code: Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous
G0328 is the HCPCS Level II code for colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous. In 2024 Medicare paid an average of $17.64 per service for G0328 across 305,535 services. Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 1 per day on outpatient hospital claims. Medicare volume fell 23% from 2022 to 2024 (397,396 to 305,535 services). In 2024, about 9,088 clinicians billed Medicare for G0328 for 305,533 beneficiaries; California, Florida, New Jersey accounted for 41% of services.
Code details
| Field | Value |
|---|---|
| Section | G codes — Procedures and professional services (temporary) |
| Coverage code | D — Special coverage instructions apply |
| Pricing indicator | 21 — Priced on the Clinical Laboratory Fee Schedule |
| BETOS category | T1H |
| Added | 2004-01-01 |
| Last action effective | 2004-01-01 |
Who bills G0328 (2024)
| Measure | Value |
|---|---|
| Clinicians billing (by place of service) | 9,088 |
| Medicare beneficiaries | 305,533 |
| States with claims | 54 |
| Share of services in top 3 states (California, Florida, New Jersey) | 41% |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for G0328, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 397,396 | 397,396 | $17.76 | $17.76 |
| 2023 | 352,524 | 352,519 | $17.63 | $17.63 |
| 2024 | 305,535 | 305,533 | $17.64 | $17.64 |
States with the most G0328 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| California | 67,495 | $17.68 |
| Florida | 39,290 | $17.66 |
| New Jersey | 19,995 | $17.67 |
| Texas | 19,136 | $17.62 |
| Arizona | 17,084 | $17.59 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| outpatient hospital claims | 1 | Code Descriptor / CPT Instruction |
| practitioner claims | 1 | Code Descriptor / CPT Instruction |
What changed for G0328
- 2004-01-01: G0328 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code G0328?
G0328 is the HCPCS Level II code for colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous. Short descriptor: "Fecal blood scrn immunoassay".
How much does Medicare pay for G0328?
In 2024, the average Medicare payment was $17.64 per service (average allowed $17.64).
Does Medicare cover G0328?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
How many units of G0328 can be billed per day?
1 on outpatient hospital claims; 1 on practitioner claims (NCCI medically unlikely edits).
Related G03 codes
- G0300 — Direct skilled nursing services of a licensed practical nurse (lpn) in the home health or hospice setting, each 15 minutes
- G0302 — Pre-operative pulmonary surgery services for preparation for lvrs, complete course of services, to include a minimum of 16 days of services
- G0303 — Pre-operative pulmonary surgery services for preparation for lvrs, 10 to 15 days of services
- G0304 — Pre-operative pulmonary surgery services for preparation for lvrs, 1 to 9 days of services
- G0305 — Post-discharge pulmonary surgery services after lvrs, minimum of 6 days of services
- G0306 — Complete cbc, automated (hgb, hct, rbc, wbc, without platelet count) and automated wbc differential count
- G0307 — Complete (cbc), automated (hgb, hct, rbc, wbc; without platelet count)
- G0308 — Creation of subcutaneous pocket with insertion of 180 day implantable interstitial glucose sensor, including system activation and patient training
- G0309 — Removal of implantable interstitial glucose sensor with creation of subcutaneous pocket at different anatomic site and insertion of new 180 day implantable sensor, including system activation
- G0310 — Immunization counseling by a physician or other qualified health care professional when the vaccine(s) is not administered on the same date of service, 5 to 15 mins time (this code is used for medicaid billing purposes)
- G0311 — Immunization counseling by a physician or other qualified health care professional when the vaccine(s) is not administered on the same date of service, 16-30 mins time (this code is used for medicaid billing purposes)
- G0312 — Immunization counseling by a physician or other qualified health care professional when the vaccine(s) is not administered on the same date of service for ages under 21, 5 to 15 mins time (this code is used for medicaid billing purposes)
Building a device that would bill under a code like this? Caduvo matches a device description to HCPCS/CPT codes, Medicare coverage and payment, and the FDA pathway in one report.
Next steps
- Run a reimbursement report for a device billed under G0328
- Watch G0328 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for G0328
Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.