Washington Provider General Billing Manual is a comprehensive guide for providers in Washington State to follow when submitting claims to the state's Medicaid program. It provides information on billing and reimbursement, coding, processing, and other important billing topics. It also includes state-specific codes, policies, and regulations that must be adhered to when submitting claims for reimbursement. The manual is updated annually and is divided into five sections: Pre-filling, Billing, Processing, and Post-Billing. The manual also includes information on the Medicaid fee-for-service, managed care, and other third-party payers. There are two types of Washington Provider General Billing Manual: the Standard Edition and the Professional Edition. The Standard Edition is for providers who are not part of a managed care plan, while the Professional Edition is for providers who are part of a managed care plan.