5-Star Nursing Home Ratings Explained

What the CMS 5-Star System Is

The CMS 5-Star Quality Rating System was introduced in 2008 by the Centers for Medicare & Medicaid Services to help consumers compare Medicare- and Medicaid-certified nursing homes. Every certified nursing home in the United States receives a rating from 1 to 5 stars, displayed on the Medicare Care Compare website.

• 5 stars — much above average
• 4 stars — above average
• 3 stars — average
• 2 stars — below average
• 1 star — much below average

The Three Rating Components

The overall star rating is built from three independently rated components. Understanding each one tells you far more than the single overall number.

1. Health Inspections (weighted most heavily)

State surveyors conduct unannounced inspections of nursing homes, typically once a year. They look for deficiencies — failures to meet federal or state standards — across areas including resident care, safety, medication management, infection control, and resident rights.

• Deficiencies are scored by scope (how widespread) and severity (how harmful)
• The most recent three years of inspections are factored in, with the most recent year weighted most heavily
• Complaint inspections (triggered by reports from residents, families, or staff) are also included
• The full inspection report — including every deficiency cited — is publicly available on Care Compare

2. Staffing

This component measures the hours of care residents receive from registered nurses (RNs), licensed practical nurses (LPNs), and certified nursing assistants (CNAs) per resident per day. Since 2016, CMS has used payroll-based staffing data (submitted directly by facilities) rather than self-reported figures, significantly improving accuracy.

• RN hours are weighted more heavily than LPN or CNA hours
• Expected staffing levels are adjusted for the acuity (medical complexity) of the facility's resident population
• Updated quarterly

3. Quality Measures

Quality measures are clinical indicators drawn from resident assessment data (the Minimum Data Set, or MDS) and Medicare claims. They measure outcomes like:

• Percentage of residents with pressure ulcers (bed sores)
• Percentage of residents who had a fall with major injury
• Percentage of residents experiencing a urinary tract infection
• Percentage of residents with significant weight loss
• Percentage of residents given antipsychotic medications
• 30-day hospital readmission rate (from Medicare claims)
• Emergency department visits per 1,000 long-stay resident days

How the Overall Star Is Calculated

The overall rating is not a simple average of the three components. CMS uses a weighted algorithm:

1. The health inspection star rating sets the base overall score
2. One star is added if the staffing rating is 4 or 5 stars and the RN staffing rating is 4 or 5 stars
3. One star is subtracted if the staffing rating is 1 star
4. One star is added if the quality measures rating is 5 stars
5. One star is subtracted if the quality measures rating is 1 star
6. The result is capped at 5 stars and floored at 1 star

What the Stars Don't Measure

The 5-star system is a useful starting point, but it has well-documented limitations:

• Annual snapshot, not continuous monitoring — inspections happen roughly once a year; conditions can deteriorate significantly between visits
• Quality measures rely on self-reported assessment data — some facilities under-report adverse events in their MDS submissions
• No measurement of resident or family satisfaction — how residents actually feel about their daily life, food, activities, and staff is not captured
• No measurement of culture or environment — the warmth of staff, the atmosphere, whether residents seem engaged and happy
• Gaming is possible — some facilities hire temporary "agency" staff before inspections to temporarily boost staffing numbers
• State variation — inspection standards and surveyor rigor vary by state, affecting how deficiencies are cited
• Doesn't reflect recent ownership changes — a facility may have been sold and dramatically changed since the last inspection

How to Actually Use the Ratings

Use star ratings as a filter, not a final answer. Here's a practical approach:

Step 1: Use Care Compare as a shortlist tool

Visit Medicare.gov/care-compare, search for facilities near your location, and filter by star rating to create a shortlist of 4–5 star facilities within your geographic and budget range.

Step 2: Read the full inspection report

Click into each shortlisted facility and read the actual inspection findings — not just the star summary. Look for:

• Deficiencies involving actual harm to residents (severity level G or above)
• Repeated deficiencies in the same area across multiple inspection years
• Any citations related to abuse, neglect, or mistreatment
• Whether the facility is on the Special Focus Facility (SFF) list — a federal designation for chronically poor performers

Step 3: Check staffing levels directly

On Care Compare, look at the staffing component in detail. Compare the facility's RN hours per resident day to the state and national averages. Low RN hours is a meaningful quality signal.

Step 4: Visit in person — more than once

No rating substitutes for a visit. Visit at different times of day, including a weekend or evening when administrative staff are less likely to be present. During the visit:

• Notice whether residents seem engaged and comfortable
• Ask to speak with current families — not ones introduced by the marketing team
• Observe how staff interact with residents
• Note odors, cleanliness, and the condition of common areas
• Ask staff how long they've worked there — high turnover is a warning sign

Step 5: Check state-level resources

Many states publish their own inspection databases, complaint histories, and enforcement actions that supplement CMS data. Search for your state's Long-Term Care Ombudsman program — they advocate for residents and can provide facility-specific feedback.

Stars and Assisted Living: A Critical Distinction

To evaluate an assisted living facility's quality, you need to use state-specific tools:

• Your state's licensing agency publishes inspection reports and violation histories for assisted living facilities — links are on every state page at Clear Assisted Living
• Consumer review sites (A Place for Mom, Caring.com, Google Reviews) provide family perspectives but have selection bias
• In-person visits remain the single most valuable evaluation tool for assisted living
• Your state's Long-Term Care Ombudsman handles complaints for both nursing homes and assisted living

Red Flags to Look For

• 1-star overall rating — especially combined with a 1-star inspection score
• Special Focus Facility (SFF) designation — reserved for the most chronically deficient facilities in the country
• Deficiencies involving actual harm (severity G–L in the inspection report) in recent inspection cycles
• Repeated deficiencies in the same category across 2+ consecutive inspections — indicates a systemic problem, not a one-time event
• Very low RN staffing (below state average) combined with a high-acuity resident population
• Recent ownership change — quality often declines in the 12–24 months following a sale, before the new owner's systems are fully in place
• High staff turnover — ask directly; facilities with good culture typically have low CNA and nurse turnover
• Marketing pressure tactics — a facility that pushes you to sign before you're ready to decide has a supply problem, not a quality problem

Frequently Asked Questions