Medicare GADCS Resources

CMS created the Medicare Ground Ambulance Data Collection System (GADCS) to collect data from selected ground ambulance providers and suppliers. CMS also created the resources below to support organizations as they gather, prepare, and submit their required data. Organizations can find additional information about the GADCS on the Medicare Ground Ambulance Data Collection System website.

Date	Title	Description	Format
Date 2025-12-09	Title Medicare Ground Ambulance Data Collection System (GADCS) Updated Codebook Year 1-4 Cohort Analysis	Description This codebook accompanies the appendix report and describes the structure and contents of the Medicare Ground Ambulance Data Collection System (GADCS) Year 1-Year 4 analytic file used to conduct the analyses described throughout the report.	Format PDF
Date 2025-12-09	Title Medicare Ground Ambulance Data Collection System (GADCS) Report Appendix Year 1-Year 4 Cohort Analysis	Description This appendix is an update to the GADCS Report that was posted on December 19, 2024. This appendix updates the response rates, summary statistics, and econometric analyses described in the previous report with data from all cohorts of the GADCS reported ...	Format PDF
Date 2025-09-09	Title Medicare Ground Ambulance Data Collection System (GADCS) Codebook	Description This codebook accompanies the report and describes the structure and contents of the Medicare Ground Ambulance Data Collection System (GADCS) Year 1 and Year 2 analytic file used to conduct the analyses described throughout the report. This codebook was o...	Format PDF
Date 2025-05-06	Title Quick Tips on Registration and Requesting Access to the GADCS Portal: Spanish	Description Tip sheet on how to access the system in Spanish.	Format PDF
Date 2024-12-19	Title Medicare Ground Ambulance Data Collection System (GADCS) Report Year 1 and Year 2 Cohort Analysis	Description This is CMS’ first report on the GADCS data that was reported by selected ground ambulance organizations in Year 1 and Year 2.	Format PDF
Date 2024-09-18	Title Reporting Labor Information in the Medicare Ground Ambulance Data Collection System (GADCS)	Description Provides a quick overview of the requirements to report staffing and labor costs (Section 7) in the Medicare GADCS.	Format Video
Date 2024-07-22	Title Ground Ambulance Industry Trends, 2017-2022 Report: Analysis of Medicare Fee-for-Service Claims	Description Analysis of Medicare Part B ambulance services claims data from 2017-2022.	Format PDF
Date 2024-07-22	Title Ground Ambulance Industry Trends, 2017-2022 Report: Analysis of Ground Ambulance Organization Entrance and Exit	Description Analysis of ground ambulance organizations that entered and exited the market during 2017-2022.	Format PDF
Date 2024-02-16	Title Reporting for Rural and Super Rural Organizations	Description Tip sheet to assist rural and super rural organizations in reporting in the GADCS.	Format PDF
Date 2024-01-01	Title GADCS User Guide	Description User manual that provides information about the system and section-by-section instructions on reporting.	Format PDF
Date 2023-11-29	Title Reporting for Public Safety Organizations	Description Tip sheet to assist public safety organizations in reporting in the GADCS.	Format PDF
Date 2023-11-16	Title Five Top Medicare Ground Ambulance Data Collection System (GADCS) Tips for Selected Year 3 and Year 4 Ground Ambulance Organizations Required to Report Beginning in January 2024	Description Tip sheet to assist selected ground ambulance organizations in Year 3 and Year 4 in reporting.	Format PDF
Date 2023-11-02	Title Five Top GADCS Tips for Selected Ground Ambulance Organizations in Year 1 and Year 2 that are Required to Report Beginning in January 2023	Description Tip sheet to assist selected ground ambulance organizations in Year 1 and Year 2 with reporting.	Format PDF
Date 2023-11-02	Title Medicare GADCS FAQs	Description Series of questions and answers for each section of the GADCS to assist selected ground ambulance organizations in collecting and reporting the required GADCS data.	Format PDF
Date 2023-11-02	Title Medicare Ground Ambulance Data Collection Instrument: English & Spanish	Description Provides the instructions and questions in English & Spanish that organizations will see in the GADCS web-based portal.	Format PDF
Date 2023-08-25	Title Walkthrough of the Medicare Ground Ambulance Data Collection System	Description Overview of the GADCS including a walkthrough of the GADCS instrument.	Format Video
Date 2023-01-26	Title Allocating Costs and Revenues	Description Tip sheet to assist organizations in allocating costs and revenues in the GADCS.	Format PDF
Date 2023-01-26	Title Reporting Expenses for Contracted Services	Description Tip sheet to assist organizations in reporting contracted services expenses.	Format PDF
Date 2023-01-26	Title Reporting for Government-Based Organizations	Description Tip sheet to assist government-based organizations in reporting in the GADCS.	Format PDF
Date 2023-01-26	Title Reporting for Provider Organizations	Description Tip sheet to assist provider organizations in reporting in the GADCS.	Format PDF
Date 2023-01-01	Title Quick Tips on Registration and Requesting Access to the GADCS Portal	Description Tip sheet on how to access the system.	Format PDF
Date 2022-11-09	Title Hardship Exemption Request Form	Description Copy of the Hardship Exemption request form.	Format PDF
Date 2022-11-07	Title Facilities Template	Description Selected ground ambulance organizations may import this template to report facilities costs to the GADCS.	Format Excel ZIP
Date 2022-11-07	Title Vehicles Template	Description Selected ground ambulance organizations may import this template to report vehicles costs to the GADCS.	Format Excel ZIP
Date 2022-11-07	Title Year 1 – Year 4 Lists of Selected Providers and Suppliers	Description List of selected providers and suppliers for each year.	Format Excel ZIP
Date 2022-11-01	Title Ground Ambulance Industry Trends, 2017–2020 Report: Analysis of Medicare Fee-for-Service Claims	Description Analysis of Medicare Part B ambulance services claims data from 2017-2020.	Format PDF
Date 2022-03-08	Title Quick Reference Guide	Description Brief overview of the GADCS and list of the specific information that selected organizations must collect and report.	Format PDF
Date 2019-07-30	Title Report: Sampling & Instrument Considerations & Recommendations	Description Report covering sampling and instrument considerations and recommendations in establishing the GADCS.	Format PDF

Page Last Modified:

07/20/2026 10:18 AM

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