Query mandates in prescription drug monitoring programs reduce opioid use among commercially insured patients with cancer.

Background: Prescription drug monitoring programs (PDMPs) have been shown to reduce opioid use in the general and noncancer populations. However, evidence of PDMP impacts on patients with cancer remains limited.

Objective: The aim of the study was to examine the impact of PDMP mandates on individual-level opioid use among patients with cancer.