The show began as a series of online 'webisodes' in 2008. Adult Swim will now broadcast the original online version of the show, edited together into longer ten minute episodes, before airing brand new episodes from August.
Speaking to IGN, Corddry admitted: "I spent this time last season talking about how I had no interest in going to television and that was never our plan and we'll never do it!"
The Hot Tub Time Machine star also revealed that while the online version of Children's Hospital "was like a sketch show with a loose premise", the new episodes would focus more heavily on continuing storylines.
"These are longer episodes and I guess you have to have some semblance of a story and I didn't know how to do that!" he explained.
"[The old style] just wouldn't sustain itself [for the longer episodes], so we actually had to come up with stories!"
Children's Hospital - which also stars former Will & Grace actress Mega Mullally - debuted last night on Adult Swim.