Gov. Peter Shumlin of Vermont on Wednesday announced proposed limits on the number of painkillers that could be prescribed, the latest measure his administration has taken to combat the opioid crisis that has ravaged the state in the last five years.

At a news conference outside the Vermont Department of Health in Burlington, Mr. Shumlin and Dr. Harry Chen, the state’s health commissioner, spoke for about half an hour about proposed regulations, which they said represented a cutting-edge approach to combating the crisis.

Under the proposal, the severity and duration of pain would be used to determine the specific limit for a prescription of opioids. For example, for a minor procedure producing moderate pain, a provider would be limited to prescribing nine to 12 opioid painkiller pills, depending on the medication. The limits would be higher for more complicated procedures, and there would be exceptions for the treatment of severe pain.

The limits are proposed amendments to an existing rule and would be official in December if approved after a period of public comment and review by a state legislative committee, said Scott Coriell, a spokesman for the governor. Mr. Shumlin proposed the rule in his State of the State address in January, and he set its passage as one of the chief priorities in his final year in office.