What is the name of House’s hospital department specializing in difficult diagnoses?

House’s hospital department is called Diagnostic Medicine.

At Princeton-Plainsboro Teaching Hospital, Dr. Gregory House leads a small team that investigates patients whose symptoms have resisted ordinary treatment or remain unexplained. The department functions as the series’ narrative engine, giving each episode a central diagnostic puzzle.

House’s team draws on many medical disciplines, ordering tests, consulting specialists, and revising hypotheses as new evidence appears. The show often dramatizes the process through a sequence of competing diagnoses before the team identifies the underlying disease.

The department should not be confused with internal medicine, the broader specialty in which House is also trained. “Diagnostic Medicine” is the fictional hospital department associated specifically with House’s team and is not presented as a standard real-world specialty in the same form.