What medical specialty does House’s team practice in House M.D.?

House’s team practices diagnostic medicine in House M.D. The fictional department specializes in identifying the causes of difficult or unexplained illnesses, often after other hospital departments have failed to reach a diagnosis.

Dr. Gregory House leads the department and approaches each case as a puzzle. His team gathers medical histories, orders tests, performs differential diagnoses, and sometimes uses treatments as experiments when the evidence remains uncertain. The show’s title and plot structure are therefore centered on diagnosis rather than one organ system.

Diagnostic medicine is broader than specialties such as cardiology or neurosurgery. A diagnostician may consider diseases affecting many body systems and coordinate with specialists when treatment requires a narrower expertise.

The show’s department is fictionalized for drama, and its diagnostic breakthroughs often happen faster than they would in ordinary clinical practice. Nonetheless, the repeated use of differential diagnosis gives the series its recognizable medical-investigation format.