post https://sandbox-apigw.optum.com/oihub/pre-service/v1/claim/precheck
Note: Supported Payer ID’s for UnitedHealthcare: 87726, 03432, 96385, 95467, 86050, 86047, 95378, 06111, 00773, 36273, 37602, 39026, 41161, 41194, 52461, 65088, 74227, 76342, 76343, 78857, 81400, 88337, 94265, 95958, USN01, 25463, UHNDC