The CMS Quality Reporting Document Architecture (QRDA) Implementation Guides (IGs) are based on the HL7 QRDA IGs. The CMS QRDA Category I IG is used for Hospital Inpatient Quality Reporting (IQR), Hospital Outpatient Quality Reporting (OQR), and the Medicare Promoting Interoperability Program for Eligible Hospitals and Critical Access Hospitals (CAHs). The CMS QRDA Category III IG is used for the Eligible Clinician programs that address aggregate reporting requirements for Primary Care First (PCF), traditional Merit-Based Incentive Payment System (MIPS) programs, Alternative Payment Model (APM) Performance Pathway, and MIPS Value Pathway (MVP).