With multiple efforts developing profiles and examples using EvidenceVariable Resource for the expression of eligibility criteria, there is a desire for the simplest solution for data exchange of match results from a checking of an EvidenceVariable Resource (for eligibility criteria) against a dataset representing an individual patient.

Match results could include:

1) There is a full and complete match for all criteria (all characteristic elements) and thus a full and complete match for the entire eligibility criteria set (the Resource)

2) There is a do-not-match for a criterion (a characteristic element) and thus a do-not-match for the entire eligibility criteria set (the Resource)

3) There is a match for some criteria and an insufficient data to determine match for some criteria, and thus a possible match for the entire eligibility criteria set (the Resource), dependent on additional data input.

To support these match results, the simplest datatype is CodeableConcept (as there are more than 2 options), and there are two elements where this match result can be applied:  the EvidenceVariable Resource, and the EvidenceVariable.characteristic element.

Proposed disposition is to create 2 extensions (one for the EvidenceVariable Resource, and one for EvidenceVariable.characteristic) with type CodeableConcept.

Use cases include:

1) Applications process workflows differently based on match patterns.

2) Reports represent data differently based on match patterns.

3) Applications determine EvidenceVariable match result based on match results of included characteristic elements.