Unbiased Analysis of Today's Healthcare Issues

How Accurate is the Chronic Condition Data Warehouse?

The CMS Chronic Condition Data Warehouse (CCW) provides researchers with Medicare and Medicaid beneficiary, claims, and assessment data linked by beneficiary across the continuum of care.  The files also use ICD-9 codes and other information to identify the chronic condition each beneficiary has.  The question is, how well does the CCW identify these chronic conditions? […]

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