Healthcare-Associated Infections: How to Check Your Hospital

Healthcare-associated infections (HAIs) are infections patients acquire during the course of receiving treatment in a healthcare facility. These infections are a critical measure of hospital safety, and CMS publicly reports infection rates for every hospital — data you can and should check before a hospital stay.

Types of Healthcare-Associated Infections Tracked by CMS

CMS tracks five major types of HAIs:

  • CLABSI (Central Line-Associated Bloodstream Infection): Infections from central venous catheters, which are tubes placed in large veins to deliver medication or fluids
  • CAUTI (Catheter-Associated Urinary Tract Infection): Infections linked to urinary catheters
  • SSI (Surgical Site Infection): Infections that occur at the site of surgery, tracked for specific procedures like colon surgery and abdominal hysterectomy
  • MRSA (Methicillin-Resistant Staphylococcus Aureus): Infections from a dangerous antibiotic-resistant bacterium
  • C.diff (Clostridioides difficile): A bacterium that causes severe diarrhea and colitis, often linked to antibiotic use in hospitals

How Infection Rates Are Reported

CMS reports infection rates using a metric called the Standardized Infection Ratio (SIR), which compares the number of infections at a hospital to the number that would be predicted based on national data. The comparison categories are:

  • "Better than the national benchmark": Fewer infections than predicted — the hospital has strong infection prevention
  • "No different than the national benchmark": Infection rates are within the expected range
  • "Worse than the national benchmark": More infections than predicted — a potential concern

Why HAIs Matter

  • HAIs affect approximately 1 in 31 hospital patients on any given day
  • They can lead to longer hospital stays, additional treatments, and increased costs
  • Some HAIs can be life-threatening, particularly for immunocompromised patients
  • Many HAIs are preventable through proper infection control practices

How to Protect Yourself

  • Research before your stay: Check your hospital's infection rates on Medicare Care Compare
  • Hand hygiene: Don't hesitate to ask doctors, nurses, and visitors to wash their hands before touching you
  • Ask about catheters: Request that urinary catheters and central lines be removed as soon as they are no longer needed
  • Surgical preparation: Follow all pre-surgical instructions, including skin preparation
  • Antibiotics: Ask your doctor about antibiotic stewardship — using antibiotics only when necessary reduces C.diff risk
  • Speak up: If your wound site looks red, swollen, or feels warm, tell your care team immediately

Where to Check Infection Rates

  • Medicare Care Compare — search for any hospital and look under the "Complications & Deaths" section
  • State health department websites often publish additional infection data
  • Ask the hospital directly about their infection prevention programs

Data sourced from CMS and the CDC National Healthcare Safety Network (NHSN). Visit Medicare Care Compare or call 1-800-MEDICARE.

Disclaimer: This article is for informational purposes only and does not constitute medical advice.

Important

This article explains how hospital quality data works and is for general information only. It is not medical advice and must not be used to decide whether to seek, delay or refuse care — that is a decision for you and a clinician who knows your situation.

CMS quality measures describe care delivered during earlier reporting periods and are refreshed roughly quarterly. A hospital's staffing, services and performance can change well before the published numbers do.

hospiguide.org is not affiliated with, endorsed by, or connected to CMS, Medicare, or any U.S. government agency, and publishes no ratings of its own.

Before acting on anything here, verify current details at Medicare.gov Care Compare or call 1-800-MEDICARE (1-800-633-4227), TTY 1-877-486-2048.

HospiGuide.org Editorial Team

Our editorial team explains U.S. hospital quality data using official CMS datasets and government publications. We are not medical professionals, we do not recommend hospitals, and we accept no payment for coverage. Every factual claim is checked against a CMS or federal source. Read our editorial policy.

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