The Contrast Low Osmolar is identified by number "1" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to BT1B1
Fluoroscopy of Bladder and Urethra using Other Contrast
Fluoroscopy of Bladder and Urethra
Fluoroscopy of Bladder and Urethra using H Osm Contrast
Fluoroscopy of Bladder and Urethra using L Osm Contrast