DES MOINES, Iowa (AP) – Iowa’s insurance commissioner says he needs a commitment from a national insurer before he can release pricing information on policies to be sold on the state’s new health insurance exchange.  The prices were scheduled to be released next week, but that’s been delayed until Sept. 16.

Commissioner Nick Gerhart told The Des Moines Register that he’s awaiting a decision from Coventry on whether it will carry through on its initial plans to offer policies. But Coventry’s new parent company, Aetna, has withdrawn from five other states’ exchanges.   Aetna officials didn’t respond to requests for comment.

If Coventry were to opt out, that would leave Iowans with only one carrier, CoOportunity Health. The state’s dominant health insurer, Wellmark Blue Cross and Blue Shield, won’t participate in the exchange until 2015.