CMS Staffing Ratings for Nursing Homes Explained

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

Category: staffing-and-quality · Updated 2026

Staffing is one of the most useful things CMS measures about a nursing home, because it speaks directly to how much time nurses and aides have for each resident. The staffing star on Care Compare is built from data facilities report to CMS, not from a one-time visit or a self-described ranking. That makes it a strong signal, but it is not the same as knowing how care feels day to day.

This guide explains where the staffing rating comes from, what it includes, and how to read it alongside the other CMS ratings.

Where the data comes from

Facilities report nurse staffing through the Payroll-Based Journal (PBJ) system, which collects daily hours by staff type. CMS uses that payroll data to calculate nurse staffing hours per resident per day and to measure turnover. Because it comes from payroll rather than from written schedules, it reflects staffing that actually happened, including contract and temporary staff.

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

What the staffing domain measures

The staffing rating generally considers two ideas together:

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

Case-mix adjustment matters because residents with higher clinical needs require more staff time. Adjusted hours let CMS compare facilities that serve different populations more fairly.

Federal staffing requirements

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

How to read 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

A facility with high hours but very high turnover can still provide inconsistent care. Look at both.

Using staffing data with the other domains

Staffing is one of three domains behind the overall rating, alongside health inspections and quality measures. Use all three. A facility with strong staffing but poor inspections may have good resources but weak systems. A facility with strong inspections but low staffing may be clean on paper yet slow to answer call lights. Combine the data with a tour 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 means the facility reports more nurse staffing hours and, usually, lower turnover. That supports good care, but it does not guarantee it. Read the inspection reports and visit before deciding.

What is case-mix adjustment?

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

Why is RN hours a separate measure?

Registered nurses provide clinical assessment and oversight that aides cannot. RN coverage, especially overnight, affects how quickly a change in condition is recognized and acted on.

Can staffing data be gamed?

PBJ uses payroll data, which is harder to misreport than schedules, and CMS audits it. Even so, the data reflects reported hours. Behavioral care quality still depends on how staff are managed and trained.

How often does staffing data update?

CMS refreshes staffing data regularly, often quarterly. Check the date on the facility page, because the number can move as new payroll data is added.

Data sources

CMS Provider Data Catalog · CMS Care Compare. This guide is informational and is not medical advice. Processing date: 2026-10-05.

Important disclosures

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