One of the urologist physicians that I work for wants to report CPT 76770 along with CPT 51798 (Measurement of post voiding residual urine). Per AUA, a complete retroperitoneal ultrasound (CPT 76770) can be reported if complete evaluation of the kidneys and urinary bladder has been done and with clinical history suggesting urinary track pathology. AUA has added that "when an abdominal ultrasound and pelvic ultrasound are performed to evaluate the kidneys and bladder, technically both a 76705 and a 76857 are performed to evaluate each of these organs. However, the American Medical Association has determined that CPT code 76770 should be billed if the clinical history suggest urinary tract pathology." Based on this information, CPT 76705 + 76857 = 76770 (for evaluation of kidneys and urinary bladder). In addition, AUA indicates that "if the urologist performs bladder US to view the anatomy, the architecture , or the morphology of the full bladder as well as to DETERMINE PVR AFTER VOIDING, use CPT code 76857." My questions, is our physician wrong to report CPT 51798 if based on the information from AUA, the PVR is included in the complete retroperitoneal study? Or in what cases CPT 51798 can be unbundled since the it has indicator 1 when CPT 76770 and 51798 are report together? Hope I am making sense. Thank you in advance for any response