Apple Health Provider Alert: Orthodontic Services Billing Guide Update Washington State Health Care Authority sent this bulletin at 11/03/2017 02:32 PM PDT Having trouble viewing this email? View it as a Web page. Apple Health (Medicaid) Provider Alert The Health Care Authority (HCA) has published an updated Orthodontic Services Billing Guide, dated November 3, 2017. This updated billing guide reflects changes to Chapter 182-535AWAC, as well as housekeeping and clarification changes.