- A bladder ultrasound is performed and if any urine is present the patient is asked to void into a jug and this is measured. The difference between the volume in the bladder according to the scan and the volume of voided urine gives the residual volume;
It might be best to start by showing you exactly where these new G codes will go on the claim form. See pic below. Where the codes go. Highlights (refer to the pic above of a physical therapy billing g codes on a claim): 1  The G codes go in the same column as your CPT codes but do not carry with it any charges. 2  The C modifier goes into one of the four âmodifiersâ column.
For Medicare to cover it, you need a sign or symptom code or a diagnosis as to why the patient requires pre-op clearance, Reckers explains. And that diagnosis should be listed first on the HCFA claim form, ahead of V72.81, Fletcher says. Because many carriers computers accept only one diagnosis code, V72.81 should be added as a second diagnosis code, particularly for lab tests, Fletcher notes.