ALBANY – In a key interpretation of reforms to the Workers’ Compensation Law, a divided appellate panel has held that medical treatments not included in a lengthy list of presumptively necessary procedures are presumptively unnecessary.

The justices of the Appellate Division, Third Department, differed Thursday on whether the state, in establishing a list of pre-authorized tests and treatments that would automatically be covered regardless of cost, implicitly determined that procedures that are not listed are not covered.