I have tried billing hcps code G0121 with modifier PT under DX code Z12.11 as primary, DX K57.30 as secondary and K64.1 as tertiary code. I have received denials from medicare stating "The procedure code is inconsistent with the modifier used or a required modifier is missing. We have attempted several different ways to re-code under medicare LCD updated with no results. Can anyone help or does anyone know of the new changes with medicare and how to bill properly under their new rules.