Search the UMP Preferred Drug List

UMP Preferred Drug List (PDL)

Find a drug's tier or whether a drug is specialty, requires preauthorization, is subject to other limits, or has less expensive alternatives.

  • The UMP PDL may be updated at any time. Changes are posted online at least once a month. Be sure to check the tier of a drug before you fill a prescription by using the UMP PDL or by calling Washington State Rx Services at 1-888-361-1611.
  • Not all drugs are listed in the UMP PDL. If your drug isn't listed, call 1-888-361-1611.

Prescription price check tool

Find out how much you'll pay for covered prescription drugs.

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How does UMP decide which drugs are preferred?

As a state-sponsored health plan, UMP must follow coverage recommendations made by the Washington State Pharmacy & Therapeutics Committee (P&T Committee), which consists of Washington health care professionals, including physicians and pharmacists.

The UMP Preferred Drug List includes these coverage recommendations.

Not all drug classes are reviewed by the Washington State P&T Committee. For these drugs, the Washington State Rx Services P&T Committee makes coverage recommendations for UMP's review and final determination of a drug's coverage level (preferred or nonpreferred).

For the plan to approve a drug for you, it must be medically necessary for your health condition. Your provider may prescribe a drug or drug dose that is not medically necessary.

For more information on the P&T Committee, see the Prescription Drug Program's webpages.


Washington State Rx Services
Phone: 1-888-361-1611