Browsing Using the Hierarchy
When browsing ICD-11, you will see the classification hierarchy on the left side of the screen. Clicking on any item will display the details of that entity on the right side of the screen
Initially, the system only shows the top level items. However, you may make the children visible by clicking on the small triangles on the left side of the items.
You could use the 
button to close all of the open branches and return back to the top level hierarchy