This concept has been retired

The concept you asked for belonged to an earlier edition of the model and is not part of the current one.

Editions of a model change what it distinguishes. A concept is retired when a later edition decides the distinction it drew is no longer one worth making — usually because a broader concept now covers the same ground, or because the idea turned out to belong somewhere else entirely.

Its address still resolves, and always will: that is why you have arrived here rather than at an error. But there is no current concept to send you to, so nothing further down this path would be honest.

Search for the term you had in mind, or start from A system of concepts for the continuity of care.