The hospital is unable to find anything wrong with him, and Walt suggests that it was a combination of medication and chemotherapy that could have caused the episode.
The hospital believes Walt is at risk for another fugue state and forces him to undergo a psychiatric evaluation.
Jesse returns to his house to clean out the basement and get rid of the RV where he and Walt have been making methamphetamine.
[1] Seth Amitin, writing for IGN, praised that the episode emphasized the "psychological impact that everything Pinkman and Walt have been through, for them, for their families".
[2] In 2019 The Ringer ranked "Bit by a Dead Bee" 40th out of the 62 total Breaking Bad episodes.