OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has revised the outlooks to stable from negative and affirmed the Financial Strength Ratings (FSR) of A- (Excellent) and the Long-Term Issuer Credit Ratings (Long-Term ICR) of “a-” of Highmark Inc. (Highmark) (Camp Hill, PA), Highmark Choice Company, HM Health Insurance Company and Highmark West Virginia Inc. (Parkersburg, WV). Concurrently, A.M. Best has affirmed the Long-Term Issue Credit Ratings (Long-Term IRs) of “bbb+” on Highmark’s existing senior