[1] The GELLO specifications have been developed in coordination with the HL7 Clinical Decision Support TC (CDSTC).
The intention was for GELLO to evolve as a standard query and expression language for decision support.
[4] GELLO creates the potential for many decision support options, as the full array of atomic patient data is greatly accessible to complement better, safer clinical decision-making by health professionals.
[5] Standardization of GELLO has made this language compatible with the HL7 version 3.0 Reference Information Model (RIM).
[6] The 2019 focus of the HL7 CDS WG was[7] to build the Clinical Quality Language (CQL),[8] version 1.5 of which was later published in 2020.