My dad recently had a tonsillectomy and had to go back to the OR 3 days later for a re-cauterization if the incision sites due to extreme bleeding(Unplanned). He received a hospital bill and I was curious to know if they had appended the 78 modifier or not, because I think he shouldn’t have gotten a bill since this was in the global period and it was related to the original procedure, and both surgeries were done by the same physician.. Input please?