How to say no ... 2017 Edition

Thanks goes out to Brett Marquard for suggesting this update!

Negation has always been a beast of a problem.  In 2011 I described a bestiary of negated concepts used in CDA, and how to relate them using the standard.  As time goes by and the standard becomes more widely used, our understanding of the best practices also changes.

So here is the original bestiary with links to examples to the CURRENTLY ACCEPTED best weapons for slaying these beasts when known and provided by the CDA Examples task force.  And I'll be posting a link to this post in the original.

1. Patient is not on THIS drug.
   Example pending, check back in a bit
2. Patient is not on ANY drugs.
   No Medications.
3. Patient does not have THIS ailment.
   No Known Problems
4. Patient does not have ANY ailment.
   No Known Problems
5. Patient does not have THIS allergy.
   Example pending, check back in a bit
6. Patient does not have ANY allergy.
   No Known Allergies
7. Patient does not have ANY MEDICATION allergy.*
   No Known Medication Allergies

* New in this edition

Examples for all of the above and more can be found at http://cdasearch.hl7.org/

   Keith