- 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.
Billing Requirements: A claim with a procedure code that falls within the procedure code range of 99381-99384 or 99391-99394 must. also contain the appropriate referral condition code NU, AV, S2 or ST in Form Item Number 24H shaded for. paper on the CMS 1500 form or the SV111 segment with a CRC qualifier for EDI.