MDS coordinator screening questions: RAI timing, PDPM coding, the RN sign-off and audit results

MDS coordinator screening questions should confirm four things: the candidate's nursing license and whether an RN will sign their assessments, which assessment types they have completed themselves, how they keep a whole building's schedule inside the federal deadlines, and whether their coding survives audits. Ask for one recent admission walked through from arrival to transmission, one late assessment and what changed afterwards, and their last audit result. As of October 2026, CMS's MDS 3.0 RAI User's Manual v1.20.11 is in effect, so a current coordinator can also tell you what changed in it.

This page is for skilled nursing facility roles built around the Minimum Data Set (MDS) and the Resident Assessment Instrument (RAI): MDS coordinators, MDS nurses, RAI coordinators and regional MDS or reimbursement consultants. For floor nursing, use registered nurse screening questions or LPN screening questions; hospital utilization review is covered in case manager screening questions.

Which MDS role are you screening for?

The title covers jobs with different scope. Confirm with the director of nursing or administrator which one this is before the first call, because it changes the knockouts.

The remote question matters because 42 CFR 483.20(b)(1)(xviii) says the assessment process must include direct observation of and communication with the resident, and communication with licensed and nonlicensed direct care staff on all shifts. A remote coordinator should describe exactly who does that at the building.

What rules does an MDS coordinator work under?

• Timing. Under 42 CFR 483.20, a comprehensive assessment is due within 14 calendar days after admission (excluding readmissions with no significant change), within 14 days after the facility determines, or should have determined, that a significant change has occurred, and at least once every 12 months. Quarterly reviews are due at least every three months. Data is encoded within 7 days after completion and transmitted to CMS within 14 days.
• Who signs. A registered nurse must conduct or coordinate each assessment with the appropriate participation of health professionals, and must sign and certify that it is complete. Each person who completes a portion signs and certifies the accuracy of that portion.
• Falsification. The same section sets civil money penalties of up to $1,000 per assessment for willfully and knowingly certifying a material false statement, and up to $5,000 for causing someone else to, both adjusted annually. Clinical disagreement is not a false statement.
• Care plans. Under 42 CFR 483.21, a baseline care plan is developed within 48 hours of admission and the comprehensive care plan within 7 days after the comprehensive assessment is completed.
• The manual. CMS's RAI manual page lists User's Manual v1.20.11 as effective October 1, 2026, and draft item sets v1.21.1, posted October 2, 2026, as effective October 1, 2027.
• Medicare payment. The Patient Driven Payment Model has classified SNF Part A stays since October 1, 2019. CMS's FY 2027 SNF final rule fact sheet (July 29, 2026) includes a request for information on PDPM case-mix upcoding and shortens the SNF Quality Reporting Program submission window from 4.5 months to about 45 days starting with FY 2029.
• Medicaid case mix. States set their own. Minnesota's Department of Health, for example, says in its case mix FAQ that CMS planned to retire the Optional State Assessment on September 30, 2025 and that Minnesota moved to the PDPM nursing component on October 1, 2025. Ask candidates which system their state used.

The usual credential is AAPACN's RAC-CT (Resident Assessment Coordinator, Certified). AAPACN says it consists of 10 courses with final exams passed at 80 percent or higher, is designed for people with at least six months of MDS experience, and must be recertified every two years; an advanced RAC-CTA is also offered. Check the nursing license itself on Nursys or the state board's lookup.

Knockout questions

How do you test whether a candidate really runs the MDS calendar?

Ask for real cases. Coordinators who did the work describe dates, sources and people in order; people who only completed sections describe the parts they touched.

1. "Walk me through a new Medicare admission, from the day they arrive to the transmitted 5-day assessment."
   • Strong answer: sets the reference date, gathers hospital records, confirms the primary diagnosis with the physician, schedules resident interviews, reconciles Section GG function scores with therapy, collects IDT sections, signs, validates, transmits and checks the validation report for errors.
   • Red flag: starts at "I code it" with no reference date, no interviews and no check after submission.
2. "How do you decide that a resident needs a significant change assessment?"
   • Strong answer: a major decline or improvement that will not resolve on its own, affects more than one area of health status, and needs IDT review or a care plan revision. Mentions the 14-day clock from when the facility determined, or should have determined, the change.
   • Red flag: "When the DON tells me to," or treats every hospital return as a significant change.
3. "Tell me about an assessment that went late. What happened, and what did you change?"
   • Strong answer: a specific cause (a missed discharge, an admission over a holiday weekend), the correction they made, and the tracking habit they added afterwards.
   • Red flag: "That has never happened," from someone who covered a full building.
4. "Nursing documentation and therapy disagree on a resident's Section GG scores. What do you do?"
   • Strong answer: goes back to the observation period, talks to both disciplines, codes the resident's usual performance as the RAI manual directs, and documents the reasoning.
   • Red flag: picks the score that produces a higher classification.
5. "The hospital discharge summary is vague about why the resident needs skilled care. How do you settle the primary diagnosis?"
   • Strong answer: queries the physician or practitioner, codes only what the record supports, and knows that the diagnosis drives the PDPM clinical category.
   • Red flag: chooses a diagnosis from a list of "good" categories.

Care plan, survey and integrity questions

How does MDS experience get overstated?

• Sections as the whole job. A nurse who completed resident interviews or Section GG for a year, described as an MDS coordinator.
• "Certified" while in progress. Half of the RAC-CT courses done. Ask for the completion date.
• Calendar owned by someone else. A regional consultant set every reference date. Ask who decided the dates.
• Old payment systems only. Experience under RUG-IV with little PDPM work. Ask for the most recent 5-day assessment they completed.
• An LPN "signing off". Federal rules require an RN to sign completion; ask who did.
• Remote coding without the team. Coding from the chart with no interviews or IDT meetings. Ask how they heard from each shift.

A 15-minute phone-screen flow

1. Minutes 0 to 2: the role from the table above, the building's beds and admissions, on-site expectations.
2. Minutes 2 to 5: knockout questions 1 to 6.
3. Minutes 5 to 10: the new Medicare admission walkthrough, then the significant change question.
4. Minutes 10 to 13: the Section GG disagreement and the integrity question.
5. Minutes 13 to 15: the candidate's questions, pay expectations and next steps.

Scoring

Knockouts are pass or fail. Score the rest 0 to 2 so every candidate for the same building is compared the same way.

For the interview after the screen, the interview guide for senior living roles shows how to structure the loop with the director of nursing. When you screen several MDS nurses in a week, reference dates, census numbers and audit results are the details that blur. Interview Signal keeps the knockout questions pinned until you ask them and writes the notes from what each candidate said, with the transcript kept on your own computer.