CMS Nursing Home Five-Star Ratings Explained

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The short answer

The CMS five-star quality rating system provides families and attorneys with a publicly accessible measure of nursing home quality, combining health inspection scores, staffing levels, and quality measures into a single rating. Understanding how to read these ratings is essential for facility selection and for building an abuse case.

People's Justice Research TeamUpdated February 20, 2026Fact-checked

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How the Five-Star Rating System Works

The CMS five-star quality rating system was introduced in 2008 and is available through the CMS Care Compare website (medicare.gov/care-compare). The overall star rating (1-5 stars) is a composite of three component ratings, each calculated separately: Health Inspections (most heavily weighted at approximately 50% of the overall score), Staffing (approximately 30%), and Quality Measures (approximately 20%). A one-star facility has performance well below average in the rated categories; a five-star facility has performance well above average. The star rating system allows consumers and attorneys to quickly identify facilities with persistent regulatory problems.

Health Inspection Component: Reading the Deficiency Reports

The health inspection component is based on the results of standard annual surveys plus complaint investigation surveys conducted over the prior 36 months. Deficiencies are categorized by scope (isolated, pattern, or widespread) and severity (potential for harm, actual harm, or immediate jeopardy to resident health or safety). The most serious deficiency category — Immediate Jeopardy, Widespread (Category J, K, or L) — indicates a situation in which the facility's non-compliance has caused or is likely to cause serious injury, harm, impairment, or death to a resident. Viewing the specific F-tags cited and their severity in the inspection database provides far more useful information for litigation than the star rating alone.

Using Star Ratings in Litigation Strategy

A nursing home with a consistent one-star or two-star health inspection history demonstrates to a jury a pattern of regulatory non-compliance extending well before the resident's specific injury. This contextual evidence is powerful for two purposes: first, it supports a finding that the facility's negligence was not an isolated incident but a systemic failure; second, it provides a factual predicate for punitive damages by showing the facility had repeated notice of its deficiencies — through formal regulatory citations — and failed to correct them. The complete survey history for any certified nursing home is publicly available through CMS Care Compare at no cost.

Key data

Data & Statistics

2 SOURCED FIGURES

Approximately 20% of U.S. nursing homes receive a one-star or two-star overall CMS rating

CMS Care Compare Data, January 2026

Facilities with one-star health inspection ratings are 3x more likely to have substantiated abuse reports than five-star facilities

Health Affairs, Nursing Home Quality Study, 2023

FAQ

Frequently Asked Questions

12 QUESTIONS

Nursing home abuse encompasses physical abuse (hitting, inappropriate restraint), sexual abuse, emotional or psychological abuse (threats, humiliation, isolation), financial exploitation, and neglect. Neglect — the failure to provide adequate food, water, hygiene, medical care, and supervision — is the most common form. Under OBRA 87, any nursing home receiving Medicare or Medicaid funding must provide care that attains or maintains each resident's highest practicable well-being. Failure to meet this standard, when it causes harm, constitutes actionable negligence. Many states also have specific elder abuse statutes providing enhanced remedies including punitive damages and attorney's fees.

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Part of the Nursing Home Abuse & Elder Abuse Investigation