G9937 – Diagnostic colonoscopy
HCPCS Level II code · G codes: Procedures / Professional Services (Temporary)
HCPCS codeG9937
- Long description
- Diagnostic colonoscopy
- Short description
- Dig or surv colsco
- Pricing indicator
00Not separately priced by Part B (bundled, not covered or Part A only)- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
Z2Undefined codes- Added
- January 1, 2018
- Last change
- January 1, 2021 – No change
- Termination date
- December 31, 2020
Frequently asked questions
What is HCPCS code G9937?
G9937 is a HCPCS Level II code for diagnostic colonoscopy. It was discontinued on December 31, 2020.
Does Medicare cover G9937?
The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.
Nearby G codes
- G9929 – Patient with transient or reversible cause of af (e.g., pneumonia, hyperthyroidism, pregnancy, cardiac surgery)
- G9930 – Patients who are receiving comfort care only
- G9931 – Documentation of cha2ds2-vasc risk score of 0 or 1 for men; or 0, 1, or 2 for women
- G9932 – Documentation of patient reason(s) for not having records of negative or managed positive tb screen (e.g., patient does not return for mantoux (ppd) skin test evaluation)
- G9933 – Adenoma(s) or colorectal cancer detected during screening colonoscopy
- G9934 – Documentation that neoplasm detected is only diagnosed as traditional serrated adenoma, sessile serrated polyp, or sessile serrated adenoma
- G9935 – Adenoma(s) or colorectal cancer not detected during screening colonoscopy
- G9936 – Surveillance colonoscopy - personal history of colonic polyps, colon cancer, or other malignant neoplasm of rectum, rectosigmoid junction, and anus
- G9938 – Patients aged 66 or older in institutional special needs plans (snp) or residing in long-term care with pos code 32, 33, 34, 54, or 56 for more than 90 consecutive days during the six months prior to the measurement period through december 31 of the measurement period
- G9939 – Pathologists/dermatopathologists is the same clinician who performed the biopsy
- G9940 – Documentation of medical reason(s) for not on a statin (e.g., pregnancy, in vitro fertilization, clomiphene rx, esrd, cirrhosis, muscular pain and disease during the measurement period or prior year)
- G9941 – Back pain was measured by the visual analog scale (vas) within three months preoperatively and at three months (6 - 20 weeks) postoperatively
- G9942 – Patient had any additional spine procedures performed on the same date as the lumbar discectomy/laminectomy
- G9943 – Back pain was not measured by the visual analog scale (vas) or numeric pain scale at three months (6 - 20 weeks) postoperatively
- G9944 – Back pain was measured by the visual analog scale (vas) within three months preoperatively and at one year (9 to 15 months) postoperatively
- G9945 – Patient had cancer, acute fracture or infection related to the lumbar spine or patient had neuromuscular, idiopathic or congenital lumbar scoliosis
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.