ValueSet-value-filter-comparator

Include these codes as defined in http://hl7.org/fhir/search-comparator version 4.0.1

Code	Display	Definition
eq	Equals	the value for the parameter in the resource is equal to the provided value.
gt	Greater Than	the value for the parameter in the resource is greater than the provided value.
lt	Less Than	the value for the parameter in the resource is less than the provided value.
ge	Greater or Equals	the value for the parameter in the resource is greater or equal to the provided value.
le	Less of Equal	the value for the parameter in the resource is less or equal to the provided value.
sa	Starts After	the value for the parameter in the resource starts after the provided value.
eb	Ends Before	the value for the parameter in the resource ends before the provided value.