We are a Pediatric office. We have a child who was exposed in another Dr office to a Sharps container. Apparently, he was able to remove some needles from the container and took them home. He did not have a needle stick that we are aware of. Mom and Dad brought him in to have HIV and HEP testing done. We used ICD V15.85 as the primary dx. Medicaid is denying the service as not medically necessary. We also billed a 99213. Any suggestions on what could have been billed differently?