Prior to creating the components or reference sets in an extension, some preliminary steps must be completed. These tasks include:

  1. Obtaining a namespace identifier from SNOMED International
  2. Acquiring the appropriate tools to support the creation, management, and distrbution of the extension
  3. Creating module(s)  
  4. Specifying module dependencies

  illustrates these key steps during the initial stage of extension creation.

Prerequisites to creating an extension