Expressions›

codeComparator

The comparison operator used to match a code path against a terminology in a retrieve expression. in tests value set membership, = tests code equality, and ~ tests equivalent matching.

Examples

Value set membership test

[Condition: code in "Diabetes Mellitus Codes"]

Exact code equality

[Condition: code = "Diabetes mellitus type 2"]

Equivalent matching (ignores version/display)

[Condition: code ~ "Diabetes mellitus type 2"]
Railroad Diagram
100%
in = ~

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EBNF

codeComparator
  : 'in'
  | '='
  | '~'
  ;

Used In

retrieve