HB399

Revise prior authorization laws

Complete·4/16/25

Montana HB399 revises prior authorization laws to prohibit certain types of prior authorizations for specific prescription drugs.

Montana HB399 amends prior authorization laws to prohibit prior authorization for oral and inhaled generic prescription drugs, inhaled prescription drugs for asthma, chronic obstructive pulmonary disease, or chronic lung disease, and insulin. It also mandates that any adverse determination for a prescription drug during prior authorization must be made by a physician specializing in the condition being treated. If an insurer makes an adverse determination, it must provide a written notice including a list of reasonable therapeutic alternatives covered by the insurer's formulary.

Included in complete analysis

  • Overview
  • Core Provisions
  • Implementation
  • Impact
  • Legal Framework
  • Critical Issues

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Sponsors

D
1
0
Democratic CaucusRepublican Caucus

Roll Call Votes

38 Yea

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12 Nay

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Calendar

Mar 21, 2025

8:00 AM

Senate Business, Labor and Economic Affairs Hearing

Feb 21, 2025

8:00 AM

House Business and Labor Hearing

History

Apr 17, 2025

House

Chapter Number Assigned

Apr 16, 2025

House

(H) Signed by Governor

Apr 9, 2025

Senate

(S) Signed by President