G9935 — Adenoma(s) or colorectal cancer not detected during screening colonoscopy
G9935 is a HCPCS Level II code for adenoma(s) or colorectal cancer not detected during screening colonoscopy. It belongs to the Procedures and Professional Services (Temporary) section. It was terminated on December 31, 2020 and is not valid on new claims.
This code has been terminated
CMS terminated G9935 on December 31, 2020. It stays in the file as history — a claim you are auditing from before that date may legitimately carry it — but it must not appear on a new claim. The adjacent codes below are the usual place to look for its replacement.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
The CMS record for G9935
- Long descriptor
- Adenoma(s) or colorectal cancer not detected during screening colonoscopy
- Short descriptor
- Canc not detectd during srcn
- Added
- January 1, 2018
- Terminated
- December 31, 2020
- BETOS
- Z2
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
When CMS retired it.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to G9935
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If G9935 is not quite right, the correct code is very often within a few positions of it.
- G9927Documentation of system reason(s) for not prescribing an fda-approved anticoagulation due to patient being currently enrolled in a clinical trial related to af/atrial flutter treatmentterminated
- G9928Fda-approved anticoagulant not prescribed, reason not given
- G9929Patient with transient or reversible cause of af (e.g., pneumonia, hyperthyroidism, pregnancy, cardiac surgery)
- G9930Patients who are receiving comfort care only
- G9931Documentation of cha2ds2-vasc risk score of 0 or 1 for men; or 0, 1, or 2 for women
- G9932Documentation 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)terminated
- G9933Adenoma(s) or colorectal cancer detected during screening colonoscopyterminated
- G9934Documentation that neoplasm detected is only diagnosed as traditional serrated adenoma, sessile serrated polyp, or sessile serrated adenomaterminated
- G9936Surveillance colonoscopy - personal history of colonic polyps, colon cancer, or other malignant neoplasm of rectum, rectosigmoid junction, and anusterminated
- G9937Diagnostic colonoscopyterminated
- G9938Patients 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
- G9939Pathologists/dermatopathologists is the same clinician who performed the biopsy
- G9940Documentation 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)
- G9941Back pain was measured by the visual analog scale (vas) within three months preoperatively and at three months (6 - 20 weeks) postoperativelyterminated
- G9942Patient had any additional spine procedures performed on the same date as the lumbar discectomy/laminectomyterminated
- G9943Back pain was not measured by the visual analog scale (vas) or numeric pain scale at three months (6 - 20 weeks) postoperatively
Questions about G9935
What is HCPCS code G9935?
G9935 is a HCPCS Level II code for adenoma(s) or colorectal cancer not detected during screening colonoscopy. It sits in the Procedures and Professional Services (Temporary) section.
Does Medicare cover G9935?
The CMS HCPCS file marks G9935 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
Is G9935 still valid?
No. G9935 was terminated on December 31, 2020 and should not be used on new claims.