Inferno is a rich and rigorous testing suite for Health Level Seven International® (HL7) Fast Healthcare Interoperability Resources® (FHIR) to help developers implement the FHIR® standard consistently. Two options are available for developers wanting to use Inferno. The Inferno Program Edition is used to help test requirements of the Standardized API for Patient and Population Services criterion § 170.315(g)(10) in the 2015 Edition Cures Update. The Inferno Community Edition contains a community-curated set of tests and tools for select FHIR Implementation Guides.