In what episode of House, MD do we find out how Chase's Mom died?!
Question: and in what episode does his dad die?
Answers: and in what episode does his dad die?
Chase finds out that his dad died from lung cancer approximately 2 months after the visit in 1x13 "Cursed". He finds this out in episode 2x08 "The Mistake".
We find out that his mom (she was an alcoholic) died approximately 10 years before 1x05 "Damned If You Do".