What was the name of House’s diagnostic department before it was dissolved in House M.D.?

House’s department was called the Department of Diagnostic Medicine before it was dissolved in House M.D.

The department is the series’ central workplace, where Gregory House and a small team investigate difficult cases that other doctors have failed to solve. Its unusual structure reflects House’s belief that diagnosis should combine evidence from many specialties rather than remain confined to one routine ward.

In the pilot and early seasons, House leads the team from this department at Princeton-Plainsboro Teaching Hospital. Hospital administrators repeatedly challenge its cost, methods, and lack of conventional patients, creating an institutional conflict alongside the medical puzzles.

The department’s name is sometimes shortened by fans to “diagnostics,” but the formal title is Department of Diagnostic Medicine. That wording distinguishes it from the broader specialties practiced by individual team members.