Section 170.204 - Functional standardsThe Secretary adopts the following functional standards:
(a)Accessibility -(1)Standard. Web Content Accessibility Guidelines (WCAG) 2.0, Level A Conformance (incorporated by reference in § 170.299 ).(2)Standard. Web Content Accessibility Guidelines (WCAG) 2.0, Level AA Conformance (incorporated by reference in § 170.299 ).(b)Reference source. Standard. HL7 Version 3 Standard: Context-Aware Retrieval Application (Infobutton) (incorporated by reference in § 170.299 ). (3)Standard. HL7 Version 3 Standard: Context Aware Knowledge Retrieval Application. ("Infobutton"), Knowledge Request, Release 2 (incorporated by reference in § 170.299 ). Implementation specifications. HL7 Implementation Guide: Service-Oriented Architecture Implementations of the Context-aware Knowledge Retrieval (Infobutton) Domain, Release 1 (incorporated by reference in § 170.299 ).(4)Standard. HL7 Version 3 Standard: Context Aware Knowledge Retrieval Application ("Infobutton"), Knowledge Request, Release 2 (incorporated by reference in § 170.299 ). Implementation specifications. HL7 Version 3 Implementation Guide: Context-Aware Knowledge Retrieval (Infobutton), Release 4 (incorporated by reference in § 170.299 ). 77 FR 54284 , Sept. 4, 2012, as amended at 80 FR 62743 , Oct. 16, 2015; 85 FR 25940 , May 1, 2020