CMS Staffing Ratings for Nursing Homes Explained

CMS staffing stars derive from payroll-based nurse hours and turnover. Learn what the staffing domain measures and why hours alone can mislead.

Updated 2026

This guide is informational and is not medical advice.

Category: staffing-and-quality · Updated 2026

Of everything CMS measures, staffing may say the most about a nursing home, because it reflects how much attention nurses and aides can devote to each resident. The staffing star on Care Compare is built from data facilities submit to CMS—not a one-off inspection or a self-styled ranking. That makes it a strong signal, even though it cannot tell you how care feels from day to day.

This guide covers where the staffing rating originates, what it includes, and how to read it beside the other CMS ratings.

The source of the numbers

Nursing homes report nurse staffing through the Payroll-Based Journal (PBJ), which records daily hours by staff category. CMS converts that payroll information into nurse staffing hours per resident per day and into turnover measures. Because it flows from payroll rather than written schedules, it captures staffing that genuinely took place, contract and temporary workers included.

The Five-Star Technical Users' Guide at CMS Five-Star Quality Rating System documents how the measures are combined, and CMS updates the method periodically.

What the staffing domain captures

The staffing rating typically combines two elements:

Staffing hours, including registered nurse (RN) hours and total nurse hours per resident per day, adjusted for the resident mix
Staff turnover, how frequently nursing staff and RNs leave over a year

Case-mix adjustment matters because residents with heavier clinical needs require more staff time. Adjusted hours allow CMS to compare facilities serving different populations on a more even footing.

Federal staffing mandates

Federal rules for certified nursing homes require a licensed nurse on duty 24 hours a day and an RN on duty for at least 8 consecutive hours a day, 7 days a week, under 42 CFR §483.35. CMS has also pursued a numeric minimum staffing standard. Any such rule can be revised or challenged in court, so confirm its current status and any phase-in dates before relying on it. The dependable floor remains the 24-hour licensed nursing and 8-hour RN requirements. Our Staff Turnover guide covers the instability side.

Reading the staffing star

Look at	What it can tell you
Adjusted total nurse hours	Overall direct-care time available per resident
Adjusted RN hours	Clinical skill depth and RN coverage
Turnover rates	Whether the workforce is stable or constantly changing
State and national averages	Context, since staffing norms differ by market

Even a facility with generous hours can deliver uneven care if turnover is very high. Weigh the two together.

Pairing staffing with the other domains

Staffing is one of three domains behind the overall rating, next to health inspections and quality measures. Consider all three. A facility with strong staffing but weak inspections may have resources yet poor systems; one with strong inspections but thin staffing may look tidy on paper but be slow to answer a call light. Read the numbers, then visit at different times of day. See CMS Five-Star Ratings Explained and the Nursing Home Tour Checklist.

Sources: CMS Five-Star Technical Users' Guide; Medicare Care Compare; 42 CFR Part 483, Subpart B; CMS Provider Data Catalog.

Related guides

Frequently asked questions

Does a high staffing star mean good care?

It signals that the facility reports more nurse staffing hours and, usually, lower turnover. That supports good care without guaranteeing it. Check the inspection reports and visit before deciding.

What is case-mix adjustment?

CMS adjusts staffing hours to reflect the clinical needs of residents, so a facility caring for sicker people is not unfairly penalized for needing more staff. The technical guide spells out the method.

Why is RN hours a separate measure?

Registered nurses perform clinical assessment and oversight that aides cannot. RN coverage, particularly overnight, shapes how quickly a change in condition is spotted and addressed.

Can staffing data be gamed?

PBJ draws on payroll data, which is harder to misreport than schedules, and CMS audits it. Still, the figures reflect reported hours. Behavioral care quality also depends on how staff are managed and trained.

How often does staffing data update?

CMS refreshes staffing data on a regular basis, often quarterly. Check the date on the facility page, since the number can shift as new payroll data arrives.

Data sources

CMS Provider Data Catalog · CMS Care Compare. This guide is informational and is not medical advice. Data as of 2026-10-06.

Required disclosures

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