We are new to billing out hearing aids to insurance companies. Our client is using HCPCS such as V5261, V5259 and V5257. They are supplying bilateral hearing aids. Does any one have experience in billing such supplies and whether these HCPCS codes are considered unilateral or bilateral? Ex. V5261 for right and left ear would be billed as V5261 or V5261-RT+V5261-LT?