Not to my knowledge. It looks like it was made from the A min pentatonic scale, with some chromatic notes, to me.
My (limited) understanding of turnarounds is that they consist of a some type of chromatic scale run with the aim of returning to the V chord (or note) of the key. In this case, Billy's returning to the key of A after playing the bridge in the key of C. Hence, the focus on the A note in this turnaround.
If you have a turnaround that ends on a D7 chord, I imagine that the key is G. And I also imagine that it uses a D7 shape in some sort of chromatic run prior to arriving at the D7 chord. Yes?
Or, D7 could be I chord. That is, it's common to use the V IV I V chord sequence as the last four bars in a 12 bar blues. There could be a run up to a D7 in the 11th bar to end on a A in the 12th bar.