Would this fall under 64642 - Chemodenervation of an extremity? That code is for 1-4 muscles.
Yes, but if other muscles are also injected, the 1 vs 2 issue for the gastroc count could make the difference between choosing 64642 vs 64644.
Thanks for bringing that up. I wasn't even thinking about other muscles not mentioned in the question. Asking about 2 when the lowest code allows 4 should have been my clue.