CoC Site Visit Prep: What the Cancer Registry Needs

A CoC site visit is won or lost in the cancer registry long before the reviewer logs in. Most of what a Commission on Cancer reviewer evaluates, from credentials and quality control to data submission and follow-up, is documented, measured, or produced by the registry team over the three calendar years leading up to the visit.

This guide is for cancer program administrators, cancer committee chairs, and registry managers preparing for a CoC site visit. It walks through how the cycle works, which standards land on the registry, what the pre-review questionnaire needs from your team, and where registries most often get caught short. Throughout, we paraphrase the CoC's published standards. Always confirm current requirements in the Optimal Resources for Cancer Care (2020 Standards), which the American College of Surgeons most recently republished in March 2026.

How the CoC Site Visit Cycle Works

According to the Commission on Cancer, accredited programs undergo a site visit every three years to maintain accreditation. The same page notes that CoC-accredited programs care for more than 74% of patients newly diagnosed with cancer each year, which is why accreditation status carries weight with referring physicians, payers, and patients.

The CoC site visit is a review of three calendar years of activity, not a snapshot of the week the reviewer arrives. A reviewer will look for evidence that required activities happened on schedule each year, were presented to the cancer committee, and were recorded in the minutes. A registry that scrambles in the final quarter can produce documents, but it cannot go back and produce three years of timely committee review.

Format matters for planning. The CoC FAQ states that all initial site visits must be conducted in person. For reaccreditation, confirm the format with the CoC when your visit is scheduled. If chart review will be conducted virtually, an ACS presentation from 2024 describes agreeing on the arrangements at least seven calendar days in advance and using HIPAA-secure video and file sharing. Your registry should know who is running the screen share and which records the reviewer may ask to see.

The Pre-Review Questionnaire Is the Real Deadline

For most registries, the date that matters is not the CoC site visit itself. It is the pre-review questionnaire, or PRQ. The CoC FAQ states that the PRQ opens in the fall before the site visit year and is due 60 calendar days before the visit, with all required documents uploaded.

That means a CoC site visit scheduled for early spring puts your real deadline in the middle of winter, often overlapping with year-end data submission. Plan backward from the PRQ, not from the visit.

According to the same ACS guidance, expect the PRQ to require policies, procedures, and cancer committee minutes from all three calendar years of the accreditation cycle. Any patient or accession lists you upload must be de-identified. The ACS has also described the PRQ reopening on the day of the CoC site visit and staying open for three business days afterward, which gives you a short window to add documentation a reviewer requests. Treat that window as a safety net, not a plan.

Registry Standards a CoC Site Visit Will Test

Many standards reviewed at a CoC site visit touch the registry indirectly. These are the ones where the registry carries most of the load.

Standard 2.1: Cancer committee membership

The cancer committee must include a credentialed Oncology Data Specialist. The standard also names coordinator roles, including a Cancer Registry Quality Coordinator who oversees registry quality control and credentialing requirements. An ODS may serve only in certain coordinator roles, and no individual may hold more than two. Check your committee roster against the March 2026 manual well before the PRQ, because a CoC site visit reviewer will.

Standard 4.3: Registry staff credentials

This is the standard that shapes every registry staffing decision. Abstracting analytic cases must be performed by an ODS, or by non-credentialed staff working under documented ODS supervision, and the requirement applies to employees, contractors, and registry service companies alike. Non-credentialed staff may perform casefinding and follow-up. The standard also sets expectations for supervised abstractors to earn the credential and for non-credentialed registry staff to complete annual cancer-related continuing education; confirm the current timelines in the manual. The credentials documentation, supervision plan, and education records go into the PRQ.

Standard 6.1: Cancer registry quality control

The registry needs a written quality control plan that includes random review of a minimum portion of the annual analytic caseload, with an ODS never reviewing their own cases. Casefinding, timeliness, and other quality checks are evaluated each year. Confirm the current sample minimums in the manual. As of an October 2025 update, audit results, recommendations, and the outcomes of those recommendations must be presented to the cancer committee within the calendar year and recorded in the minutes. If your registry has one person and no second reviewer, this is the standard to look at first. Our article on cancer registry quality assurance covers why that second set of eyes matters.

Standard 6.4: Rapid Cancer Reporting System data submission

Accredited programs submit data to the National Cancer Database through the Rapid Cancer Reporting System. A 2026 ACS Cancer Programs News update explains that at least 90% of cases, free of NCDB edits, must be submitted by the December 31 deadline, or the program may be rated noncompliant. According to the CoC change log, RCRS data and quality measure results also go to the cancer committee at least twice a year, and a CoC site visit reviewer will look for both reports in the minutes. A registry backlog shows up here first, which is why our cancer registry backlog article recommends clearing it well before submission season.

Standard 6.5: Follow-up of patients

According to the CoC change log, follow-up requirements moved to a rolling 15-year window in 2021. The standard sets minimum follow-up rates, and the percentages circulating in secondary sources do not always match, so confirm the current figures in the manual rather than relying on a training deck or a colleague's memory.

Standard 7.1: Quality measures

The registry supplies the data behind the CoC's accountability and quality improvement measures. Expected performance rates are reviewed with the cancer committee, and the CoC site visit will look for evidence that the committee reviewed them and acted when a program fell short.

Recent Changes Worth Knowing Before Your CoC Site Visit

The standards edition has not changed, but the details inside it have. The CoC's standards change log is the most efficient way to see what moved since your last CoC site visit. A few changes worth flagging:

• Credential name. The CoC replaced "CTR" with "ODS" throughout the manual in February 2024 without changing the requirements. The National Cancer Registrars Association began using the Oncology Data Specialist name on January 1, 2024. Update job descriptions and your credentials documentation to match.
• Quality control reporting. The October 2025 change to Standard 6.1 tightened how audit results and follow-through are documented in committee minutes.
• Action plans. A June 2026 ACS update describes action plans for Standards 5.1, 5.9, and 7.1 going to the committee with the internal audit and being recorded in the minutes.
• Coming workload. The ACS has announced new AJCC staging protocols for several primary sites for cases diagnosed on or after January 1, 2027, and an operative standards special study beginning in late summer 2027 that asks programs to abstract up to 30 additional cases, with completion needed for a compliant rating on Standard 9.2. Both add registry hours at the same time many teams are preparing a PRQ.

Where Registries Get Caught Short

Most CoC site visit problems we see are not knowledge problems. Registry teams know the standards. The trouble is capacity and coverage.

The one-person registry. When a single ODS carries abstraction, quality control, committee reporting, and PRQ preparation, every one of those tasks competes for the same hours. Something slips, and it is usually documentation.

Coverage gaps. Someone takes two weeks off, and the suspense list does not. A planned leave or an unexpected vacancy in the year before a CoC site visit can push a registry behind on abstraction and RCRS submission at exactly the wrong time.

No independent reviewer. Standard 6.1 requires quality control, and a registrar cannot review their own cases. Small registries often meet the letter of the standard while lacking a genuinely independent look at their data.

Supervision that exists on paper. If non-credentialed staff abstract under ODS supervision, the supervision plan has to be real and documented. A plan written for the PRQ will not hold up to questions.

Minutes that do not tell the story. Reviewers rely on cancer committee minutes to confirm that required reports were presented and acted on. Work done but not recorded is very hard to prove.

A Practical Readiness Timeline

Every program's calendar is different, but working backward from the PRQ due date gives most registries a realistic plan.

Twelve months before the CoC site visit: Run a gap assessment against the registry standards. Confirm committee roles, credentials, supervision documentation, and continuing education records. Check abstraction status and RCRS submission against the 90% requirement.

Nine months before the CoC site visit: Close the gaps. Clear any abstraction backlog, complete overdue quality control reviews, and make sure audit results and follow-through are in the committee minutes for each year of the cycle.

Six months before: Assemble the PRQ documents by standard. Identify any missing minutes or reports early, while there is still a committee meeting on the calendar where they can be presented.

The fall before the visit: When the PRQ opens, upload as you go rather than in a final rush. Confirm de-identification on every patient list.

Sixty days before: The PRQ is due. After submission, prepare the registry team for the CoC site visit itself: who presents, who manages any virtual chart review, and who can answer questions about quality control and follow-up.

How Medovent Helps Registries Prepare

Medovent's oncology data management team supports cancer registries with credentialed Oncology Data Specialists, backlog abstraction, interim registry leadership, and quality assurance review. For programs approaching a CoC site visit, we offer a readiness assessment that reviews registry operations against the published standards, identifies gaps in documentation and data, and recommends a plan to close them.

Quality is central to how we work. Our delivery model includes dedicated QA reviewers, and clients increasingly ask for an embedded QA resource that gives a one-person registry the independent review Standard 6.1 expects. All of our work is performed by US-based staff.

We cannot guarantee an accreditation outcome. Nobody honestly can. What we can do is make sure the registry walks into the PRQ and the CoC site visit with the work done, documented, and reviewed by a second set of credentialed eyes.

Frequently Asked Questions

How often does a CoC-accredited program have a site visit, and when is the pre-review questionnaire due?

The Commission on Cancer requires a site visit every three years to maintain accreditation. According to the CoC, the pre-review questionnaire opens in the fall before the site visit year and is due 60 calendar days before the visit, with all documents uploaded.

Can non-credentialed registry staff abstract cases at a CoC-accredited program?

Only under documented supervision by a credentialed Oncology Data Specialist. Under Standard 4.3, analytic abstracting is performed by an ODS or by non-ODS staff under ODS supervision. Non-credentialed staff may perform casefinding and follow-up.

What does the CoC require in a cancer registry quality control plan?

Standard 6.1 requires a written quality control plan that includes random review of a minimum portion of the annual analytic caseload, with no ODS reviewing their own cases, plus annual checks such as casefinding and timeliness. Results, recommendations, and outcomes must be presented to the cancer committee and recorded in the minutes. Confirm current sample minimums in the CoC manual.

Did the CTR credential change, and do job descriptions need updating?

Yes. The National Cancer Registrars Association renamed the Certified Tumor Registrar credential to Oncology Data Specialist (ODS), with the new name in use from January 1, 2024. The CoC updated its manual to say ODS in February 2024 without changing requirements, so job descriptions and credentials documentation should use ODS.