# US Quality Core Capability Statements - 2026 US Quality Core Implementation Guide v0.5.0

## US Quality Core Capability Statements

* [US Quality Core Client CapabilityStatement](CapabilityStatement-us-quality-core-client.md) 
This capability statement describes the expected capabilities of the US Quality Core Client which is responsible for initiating queries for USCDI+ Quality V1 data from US Quality Core Servers. The set of FHIR RESTful operations and search parameters required to be supported by US Quality Core Servers is provided in the [US Quality Core Server Capability Statement](CapabilityStatement-us-quality-core-server.md). US Quality Core Clients have the option of choosing from this list to access necessary data based on their local use cases and other contextual requirements. 

* [US Quality Core Server CapabilityStatement](CapabilityStatement-us-quality-core-server.md) 
This capability statement describes the expected capabilities of the US Quality Core Servers which is responsible for responding to USCDI+ Quality V1 queries submitted by US Quality Core Clients. It describes a minimum set of FHIR RESTful operations and search parameters necessary to enable access to the set of USCDI+ Quality V1 data that is in scope of this implementation guide. For more information about which USCDI+ Quality data elements are in scope, please review the [USCDI+ Quality](uscdiquality.md) section of this implementation guide. 
US Quality Core Servers **SHALL** support the capabilities described in the [US Core Server CapabilityStatement STU6.1](https://hl7.org/fhir/us/core/STU6.1/CapabilityStatement-us-core-server.html). Some RESTFUL operations and search parameters described in the US Quality Core Server CapabilityStatement are redundant to the US Core Server CapabilityStatement, but are listed here to highlight which capabilities are specifically relevant to USCDI+ Quality V1. 
The US Quality Core Implementation Guide v0.5.0 is derived from the QI-Core Implementation Guide STU6. It adopts all profiles within the [QI-Core Implementation Guide STU6](https://hl7.org/fhir/us/qicore/STU6/) to enable a more seamless adoption of this implementation guide. However, only those profiles that contain USCDI+ Quality V1 data are required to be supported by US Quality Core Servers. The FHIR RESTful operations and search parameters in this capability statement reflects this scope. 

