I am trying to learn Cripple Creek and I've seen two YouTube videos where they play a high part in the middle with the LH Position starting on the 9th fret (or maybe even higher).
The high part you're describing is probably a tune often called Banjo in the Hollow. It's often taught as an introduction to basic melodic style. The chords for the A part (first part) are the same as Cripple Creek. The B part is slightly different, but the tune works as a variation when you want to play more than one verse of Cripple Creek.