HL7 FHIR® US Core Implementation Guide CI Build

US Core, published by HL7 International - US Realm Steering Committee. This is not an authorized publication; it is the continuous build for version 3.1.0). This version is based on the current content of https://github.com/HL7/US-Core-R4/ and changes regularly. See the Directory of published versions

General Security Considerations

US Core transactions often make use of patient-specific information which could be exploited by malicious actors resulting in exposure of patient data. For this reason, all US Core transactions must be secured appropriately with access to limited authorized individuals, data protected in transit, and appropriate audit measures taken.

Implementers SHOULD be aware of these security considerations associated with FHIR transactions, particularly those related to:

For the purposes of US Core, security conformance requirements are as follows:

  • Systems SHALL establish a risk analysis and management regime that conforms with HIPAA security regulatory requirements. In addition US Federal systems SHOULD conform with the risk management and mitigation requirements defined in NIST 800 series documents. This SHOULD include security category assignment in accordance with NIST 800-60 vol. 2 Appendix D.14. The coordination of risk management and the related security and privacy controls – policies, administrative practices, and technical controls – SHOULD be defined in the Business Associate Agreement when available.
  • Systems SHALL reference a single time source to establish a common time base for security auditing, as well as clinical data records, among computing systems. The selected time service SHOULD be documented in the Business Associate Agreement when available.
  • Systems SHALL keep audit logs of the various transactions.
  • Systems SHALL use TLS version 1.2 or higher for all transmissions not taking place over a secure network connection. (Using TLS even within a secured network environment is still encouraged to provide defense in depth.) US Federal systems SHOULD conform with FIPS PUB 140-2.
  • Systems SHALL conform to FHIR Communications Security requirements.
  • For Authentication and Authorization, Systems SHALL support the SMART App Launch Framework for client <-> server interactions. NOTE: The SMART on FHIR specifications include the required OAuth 2.0 scopes for enabling security decisions.
  • Systems SHALL implement consent requirements per their state, local, and institutional policies. The Business Associate Agreements SHOULD document systems mutual consent requirements.
  • Systems SHOULD provide Provenance statements using the US Core Provenance Profile resource and associated requirements.
  • Systems MAY implement the FHIR Digital Signatures and provide feedback on its appropriateness for US Core transactions.
  • Systems MAY protect the confidentiality of data at rest via encryption and associated access controls. The policies and methods used are outside the scope of this specification.