Footnote Crosswalk

The footnote crosswalk displays a list of footnotes and their summary.

Part of the CMS Data Feeds Dataset › Medicare

Dataplex delivers this CMS feed as the analysis-ready table DWV.FOOTNOTE_CROSSWALK on Snowflake and Databricks — three snapshot releases spanning 2022–2025, 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.FOOTNOTE_CROSSWALK
Databricks	cms_dwv.footnote_crosswalk
Update pattern	Full-refresh — each file replaces the prior snapshot
CMS published	2025-09-18
Loaded	2025-11-28
Columns	2 data + 6 lineage
File versions	3
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 2025-09-18. Coverage runs through 2025-09-18. Next CMS release expected ~Dec 2027.

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.FOOTNOTE_CROSSWALK
WHERE FILE_ID IN (
  SELECT ID FROM DWV.FEEDS_FILES WHERE IS_LATEST = 1
)
LIMIT 100;

Databricks

About this feed

The footnote crosswalk displays a list of footnotes and their summary.

— Source: CMS feed metadata

Keywords: Medicare, Footnote Crosswalk Theme: Medicare

Coverage timeline

2022 🟩 · 2023 ⬜ · 2024 ⬜ · 2025 🟩

2 of 4 years with snapshot releases — gaps: 2023, 2024.

Release history

Reporting period	CMS published	Loaded	Latest file
Snapshot as of 2025-09-18	2025-09-18	2025-11-28	✓
Snapshot as of 2025-01-13	2025-01-13	2025-02-27
Snapshot as of 2022-10-04	2022-10-04	2024-12-14

Data dictionary

📋 2 data columns + 6 lineage columns

Column-level definitions are maintained by CMS in the official Footnote Crosswalk data dictionary.

Data columns

Column	Type
FOOTNOTE	TEXT
FOOTNOTE_TEXT	TEXT

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.FOOTNOTE, d.FOOTNOTE_TEXT,
       ff.TEMPORAL_START, ff.TEMPORAL_END, ff.CMS_FEED_MODIFIED
FROM DWV.FOOTNOTE_CROSSWALK 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 Footnote Crosswalk updated?

CMS last published this feed on 2025-09-18. New releases are added automatically when CMS publishes them.

What years does Footnote Crosswalk cover?

2022 through 2025. Coverage gaps: 2023, 2024.

How many records are in Footnote Crosswalk?

Count the current snapshot yourself once the share is mounted:

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

How do I get Footnote Crosswalk 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.FOOTNOTE_CROSSWALK directly — no pipeline setup required.

Related feeds

Hospital EnrollmentsMedicare Post-Acute Care Utilization - Skilled Nursing Facility by Geography and ProviderMedicare Physician & Other Practitioners - by Geography and ServiceRevalidation Due Date ListAmbulatory Surgical Center Quality Measures - National

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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Part of the CMS Data Feeds Dataset — 280+ feeds · 245B+ records · updated daily. Back to the full catalog →