Fitch Ratings has assigned an "AA-" rating to UPMC's series 2015B revenue bonds, affecting $150 million.
Fitch has also affirmed the "AA-" rating on UPMC's outstanding parity debt.
The rating affirmation is based on several factors, including UPMC's dominant market share in western Pennsylvania and its stable liquidity.
The rating outlook is revised to stable from negative, reflecting Fitch's view that the non-renewal of the UPMC Highmark contract and the formation of the Allegheny Health Network have not had a negative impact on UPMC.