Anesthesia for dialysis vascular shunt

Anesthesia for dialysis vascular shunt on the arm for a patient approaching end-stage renal disease. (assign anesthesia code and P modifier) Assign the appropriate code and physical status modifier to describe anesthesia services for this non-MEDICARE claim. This is a 51-year-old man with chronic right-sided submandibular swelling occurring over the last few years. The diagnosis of right sialoadenitis was made. Excision of the right submandibular gland was performed. The patient has mild hypertension. Two codes are required.