I am billing PT modalities (97110, 97140 and 97014) under a Chiropractor with UHC. When I bill the claim without using any modifiers, the modalities are denied for not using the proper modifiers. When I bill the claim with GP modifiers (still under the Chiropractor), the claims are processing out under the PT visit limit. What modifiers should I be using to show that these are PT charges billed by a Chiropractor, to ensure the claims are processed under the Chiropractic visit limit?