Is the modifier GP (outpatient Physical Therapy) allowed for chiropractic CPT codes 97530, 97110, 97112, 97140, and 97530? When I called Superior Health (a Texas Medicaid HMO) I was told that these codes needed either GO or GP. As GO is for occupational therapy, I didn't expect that would work. When I tried AT (the code that TMHP, the Texas Medicaid cite lists for chiropractic), my software (Kareo) said it was an invalid modifier for those CPT codes. I suppose I can submit the claim with AT anyway and see what Superior says, if in fact I am not allowed to use GP.
I just want to make sure I am not fraudulent by putting GP when the treatment was performed by a chiropractor and not a PT.