I am new to Radiation Oncology coding. My department is using code 61904 for barium sulfate (Berry Smoothie) but I can’t locate this code anywhere.
The following is from the simulation note. Can anyone help me on coding for this please and where to find the information on it if possible ?

Pelvis. supine. pillow. Vaclock. hands on chest holding O-ring. full bladder. shoes off. 30 ml of Barium in rectum. 5 cc of omnipaque in bladder

Thanks