Healthcare Associated Infections - National

The Healthcare-Associated Infections (HAI) measures - national data.

Part of the CMS Data Feeds Dataset › Medicare

Dataplex delivers this CMS feed as the analysis-ready table DWV.HEALTHCARE_ASSOCIATED_INFECTIONS__NATIONAL on Snowflake and Databricks — six snapshot releases spanning 2024–2026, aligned to a single schema, refreshed automatically whenever CMS publishes a new file. Every row carries lineage back to the exact CMS source file that produced it.

Key facts

Snowflake	DWV.HEALTHCARE_ASSOCIATED_INFECTIONS__NATIONAL
Databricks	cms_dwv.healthcare_associated_infections__national
Update pattern	Full-refresh — each file replaces the prior snapshot
CMS published	2026-04-21
Loaded	2026-05-15
Columns	6 data + 6 lineage
File versions	6
License	CMS public data — U.S. Government work
Platforms	Snowflake Marketplace · Databricks Delta Sharing

Included in the CMS Data Feeds Dataset — start a free trial on Snowflake Marketplace.

Current — CMS last published this feed on 2026-04-21. Coverage runs through 2026-04-21. Next CMS release expected ~Jul 2026.

Full-refresh feed — each file version is a complete snapshot and newer files supersede older ones. Filter to the latest file (see the sample query) to avoid double-counting across versions.

Sample queries

Snowflake

-- Latest snapshot only (avoids double-counting across file versions)
SELECT *
FROM DWV.HEALTHCARE_ASSOCIATED_INFECTIONS__NATIONAL
WHERE FILE_ID IN (
  SELECT ID FROM DWV.FEEDS_FILES WHERE IS_LATEST = 1
)
LIMIT 100;

Databricks

About this feed

The Healthcare-Associated Infections (HAI) measures - national data. These measures are developed by Centers for Disease Control and Prevention (CDC) and collected through the National Healthcare Safety Network (NHSN). They provide information on infections that occur while the patient is in the hospital. These infections can be related to devices, such as central lines and urinary catheters, or spread from patient to patient after contact with an infected person or surface. Many healthcare associated infections can be prevented when the hospitals use CDC-recommended infection control steps.

— Source: CMS feed metadata

Keywords: Medicare, Healthcare Associated Infections - National Theme: Medicare

Coverage timeline

2024 🟩 · 2025 🟩 · 2026 🟩

3 of 3 years with snapshot releases — no gaps.

Release history

Reporting period	CMS published	Loaded	Latest file
Snapshot as of 2026-04-21	2026-04-21	2026-05-15	✓
Snapshot as of 2026-01-26	2026-01-26	2026-02-28
Snapshot as of 2025-10-14	2025-10-14	2025-11-28
Snapshot as of 2025-07-16	2025-07-16	2025-08-06
Snapshot as of 2025-01-08	2025-01-08	2025-02-27
Snapshot as of 2024-10-10	2024-10-10	2024-12-14

Data dictionary

📋 6 data columns + 6 lineage columns

Column-level definitions are maintained by CMS in the official Healthcare Associated Infections - National data dictionary.

Data columns

Column	Type
MEASURE_ID	TEXT
MEASURE_NAME	TEXT
SCORE	NUMBER
FOOTNOTE	TEXT
START_DATE	DATE
END_DATE	DATE

Lineage columns (present on every feed table)

Column	Type	Description
ROW_ID	TEXT	Unique row ID for this table (PK)
FILE_ID	TEXT	Source file — joins to FEEDS_FILES.ID (FK)
FILE_FEED_ID	TEXT	Parent feed — joins to FEEDS.ID (FK)
FILE_NAME	TEXT	Source file name as published by CMS
ROWNUM	NUMBER	Row number within the source file
CREATED_AT	TIMESTAMP_NTZ	Timestamp when the record was loaded

Row-level lineage

Every row in this table traces to the exact CMS source file that produced it. The FILE_ID column joins to the FEEDS_FILES catalog table, and FILE_FEED_ID joins to the FEEDS master table:

Trace any row back to its source file and reporting period:

SELECT d.MEASURE_ID, d.MEASURE_NAME, d.SCORE,
       ff.TEMPORAL_START, ff.TEMPORAL_END, ff.CMS_FEED_MODIFIED
FROM DWV.HEALTHCARE_ASSOCIATED_INFECTIONS__NATIONAL d
JOIN DWV.FEEDS_FILES ff ON d.FILE_ID = ff.ID;

Source & provenance

Published by the Centers for Medicare & Medicaid Services.

• Official CMS documentation

Frequently asked questions

How often is Healthcare Associated Infections - National updated?

CMS last published this feed on 2026-04-21. New releases are added automatically when CMS publishes them.

What years does Healthcare Associated Infections - National cover?

2024 through 2026.

How many records are in Healthcare Associated Infections - National?

Count the current snapshot yourself once the share is mounted:

SELECT COUNT(*)
FROM DWV.HEALTHCARE_ASSOCIATED_INFECTIONS__NATIONAL d
JOIN DWV.FEEDS_FILES ff ON d.FILE_ID = ff.ID
WHERE ff.IS_LATEST = 1;

How do I get Healthcare Associated Infections - National data?

It's included in the CMS Data Feeds Dataset on the Snowflake Marketplace (free trial available) and via Databricks Delta Sharing. Once mounted, query DWV.HEALTHCARE_ASSOCIATED_INFECTIONS__NATIONAL directly — no pipeline setup required.

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Get this feed

1. Start a free trial on Snowflake Marketplace or purchase via Databricks

2. Mount the share — the database and DWV schema appear in your account immediately

3. Run the sample query above — no ETL, no pipeline maintenance

Questions about this feed? Contact us at [e-mail].

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