Searching a Read Code Chapter and Excluding One Section

You may want to run a search to find all patients excluding one particular group.

For example, patients with records in Read Chapter E, Mental Disorders, but exclude those in E3, Mental Retardation:

1. From the Search Details pane, select Add Entity - Medical History.
2. Highlight Medical History and choose Selections.
3. Select Read code for General Entity, then Read Select, chapter E.
4. Select Add New.
5. Select Read Select, chapter E3 and select Not Equal:

   

6. Add any further requirements and run the search.