Understanding Health Insurance: A Guide to Professional Billing, 7th edition, is a comprehensive guide for those learning about health insurance claims processing and reimbursement issues. The text utilizes a step-by-step approach to successful completion of health insurance claims. The objectives of this edition are to 1) introduce information about major third party payers, 2) provide up-to-date information about federal health care regulations, 3) clarify coding guidelines and provide application exercises for each coding system, 4) introduce reimbursement issues, 5) emphasize the importance of coding for medical necessity, and 6) help users develop the skill to complete claims accurately. Numerous examples help clarify key concepts. Case studies and review exercises provide users with numerous opportunities to apply knowledge and develop skills in completing CMS-1500 claims accurately. The textbook CD-ROM and accompanying workbook provide additional exercises and practice in completing CMS-1500 claims electronically. Current information is provided on CPT-5 and ICD-10-CM coding systems. The appendices include information about processing UB-92 (CMS-1450) claims and dental claims.