User Guide

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Information on registering and signing in

You may use the ICD-11 browser without registration. However, registered users of the browser can perform additional functions such as:

  • Contribute to the development of ICD11 by commenting on the content
  • Make proposals that suggest changes in the classification or enhance the content in it
  • Read other users' comments or proposals and participate
  • Access to PDF or Word versions of the classification that can be printed
  • ... and more

You may click the [Log In] link to sign in to the system. If you don't already have an account, it's very easy to setup one using the [Register] link

Visualization Modes


When visualizing the foundation, all nodes look the same except the selected entity which has a darker background and larger circle. In this example the Intervertebral disc herniation is the selected entity


When browsing a linearization, only entities in that linearization are visible. Regular parent-child relations are shown in blue color. The foundation children that are not linearization children are shown with a dashed line in gray.

The color within the circle shows whether the entity is a grouping entity or a category with a code

Linearization within foundation

If you click on the button, the system displays the system shows you the foundation but highlighting the linearization within the foundation.

In this mode, the entities that are in the linearization has a blue circle whereas entities that are not in the linearization has a gray circle. As in the linearization view, the color inside circle shows whether the entity is a grouping or a codable category

The blue lines show the linearization parents where as the gray lines are other parent-child relations in the foundation

In this example, "Polycythaemia" has 3 children in the foundation.

One of them (the one with the gray circle) is not included in the linearization.

"Relative polycythaemia" is included in the linearization but the linearization parent is elsewhere (blue node with gray connection).

The third one is a proper linearization children (blue circle with blue line)

More information on the visualization feature is available in the User Guide