There are quite a few times House is in a hospital bed.
In A Hospital Bed: 1) Three Stories 1x21 2) No Reason 2x24 3) 97 seconden 4x03 4) u Don't Want To Know 4x08 (not really a hospital bed though) 5) Wilson's hart-, hart 4x16
Collapses: 1) No Reason 2x24 2) 97 seconden 4x03 3) u Don't Want To Know 4x08 4) House's Head 4x15 5) Birthmarks 5x04
Um not entirely sure what episode u are talking about because House is in a hospital bed quite often but the only time I think of him being sick is in "Three Stories". But he did not collaspe in that episode.