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Chronic Conditions Data Warehouse

Your source for national CMS Medicare and Medicaid research data

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  1. Chronic Conditions Data Warehouse
  2. Analytic Guidance
  3. User Documentation

User Documentation

The following user guides provide information that may be helpful in understanding and analyzing the CCW data including descriptions of the CCW population, chronic condition definitions, and limitations of the data.

  • CCW Medicare Administrative Data User Guide
  • CCW Medicare Encounter Data User Guide
  • CCW Medicare Part D Data User Guide
  • CCW Medicare Healthcare Effectiveness Data and Information Set (HEDIS) User Guide
  • CCW Medicare Risk Score Files User Guide
  • CCW Medicare Bayesian Improved Surname Geocoding (MBISG) User Guide
  • CCW Medicare Data on Provider Practice and Specialty (MD-PPAS) User Guide
  • CCW Million Hearts® Cardiovascular Disease Risk Reduction Model Files User Guide
  • CCW Oncology Care Model (OCM) Files User Guide
  • CCW Accountable Health Communities (AHC) Model Data File User Guide
  • CMS CMMI Model Data Sharing User Guide
  • CCW T-MSIS Analytic Files (TAF) User Guide
  • CCW Medicaid Analytic eXtract (MAX) User Guide
  • CCW MMLEADS User Guide - 2016 Forward
  • CCW MMLEADS User Guide - 2006-2012
  • CCW VRDC Data Output Review Process
  • CCW VRDC Data Output Review Do’s and Don’ts

Archive Files

  • Medicare Encounter Data User Guide 2015 Preliminary
CMS: Centers for Medicare & Medicaid Services

This website was developed under contract with the Centers for Medicare & Medicaid Services (CMS).

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