According to the news report, St. Luke's A1 rating covers $532 million in bonds and its continued financial improvement from 2009 and 2010 through the first three months of the 2011 fiscal year. Moody's also pointed to the health's system's improvements in debt coverage and liquidity ratios. Read the news report about St. Luke's Health System's improved credit rating. Related Articles on Hospital Credit Ratings: West Penn Allegheny's S&P Rating Goes from Negative to Developing After Proposing Highmark Merger 8 Health Systems Receive Credit Downgrades Moody's Upgrades HCA From Junk-Level