Gina:

I know this is late, but here goes… Are you billing for skilled nursing visits or shifts? If you are billing for SN visits, you report the nursing revenue code (55X) along with the corresponding HCPCS code on a UB-04. I believe the units of the G code are in 15-minute increments.

When reporting private duty nursing shifts, you would report S9123 or S9124 on a HCFA-1500 form…each unit equals one hour. That’s the way a contracting provider would report their services to the insurance company I work for. To get the Medicare denial for shifts, you would report on a UB-04, revenue code 552 and HCPCS codes S9123 and/or S9124 (each unit = one hour).

Not sure if this will help anyone, but I hope it does.