QICore Observation Delta Value Set Definition

Code indicating how the current observation compares to previous observations - e.g., no change, rising trend, decreasing trend, etc...

This value set includes codes from the following code systems:

• Include these codes as defined in http://hl7.org/fhir/v2/0078

  Code	Display
  B	Better-use when direction not relevant
  D	Significant change down
  U	Significant change up
  W	Worse-use when direction not relevant