House M.D. has 177 episodes in its complete television run.
The series aired for eight seasons on Fox from November 2004 through May 2012. Its episodes generally follow a diagnostic puzzle: a patient presents with puzzling symptoms, House’s team proposes and tests competing explanations, and the case ultimately reveals a rare or overlooked cause.
The total includes the regular episodes broadcast across all eight seasons. It does not count promotional material, recap programming, DVD extras, or episodes of related medical series. The number is therefore different from the number of weeks the show occupied a schedule, since some seasons included breaks and scheduling changes.
The episode count is often confused with the number of installments in similarly titled medical dramas. House M.D. is also listed simply as House in many references, but both titles refer to the same 177-episode series.