What is cpt code 51798?

CPT code 51798 refers to the "measurement of post-void residual urine and/or bladder capacity by ultrasound." This procedure is commonly used to assess urinary retention and bladder function, typically performed after a patient voids to evaluate the amount of urine left in the bladder. The use of ultrasound for this purpose is non-invasive and provides valuable information for diagnosing urinary issues.