(Bloomberg News) Long-term care insurance has an uncertain future as it may be difficult for firms to profit from the product, Moody's Investors Service said today.

"Key credit considerations for the sector are the relative newness of long-term care insurance and the long-tailed and complex product structure, which make it difficult to price the product profitably," Laura Bazer, a vice president at Moody's, said today in a statement.

Genworth Financial Inc. has said it's raising prices for the coverage, while the largest U.S. life insurers, led by MetLife Inc. and Prudential Financial Inc., are retreating from selling long-term care coverage.