---
type: "Bill"
title: "Revise laws related to pharmacy benefit managers"
description: "Revise laws related to pharmacy benefit managers"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2023"
identifier: "HB 379"
citation: "Montana HB 379 (2023)"
classification: ["bill"]
subjects: ["Health Care Services (see also: Health)", "Insurance"]
status: "enacted"
primary_sponsors: ["Tom Welch"]
version_count: 4
action_count: 48
vote_count: 6
first_action: "2022-11-29T21:19:29+00:00"
last_action: "2023-04-26T19:33:09+00:00"
source: "openstates"
source_identifier: "ocd-bill/3d3238d6-eb44-4afb-b588-9114c167ac50"
source_url: "https://bills.legmt.gov/#/bill/20231/LC1663"
source_hash: "cfd0e487625634c37e8d695d9748f5755907638ce3185abdc0257f15daaa3b54"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mt"]
---

# Montana HB 379 (2023) — Revise laws related to pharmacy benefit managers

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **HB0379.001.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=7990)
2. **HB0379_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=7992)
3. **HB0379_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=7993)
4. **HB0379_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=7991)

## Votes

- (H) Committee Executive Action--Bill Passed as Amended — **15–4** (pass) · lower
- (H) 3rd Reading Passed — **93–0** (pass) · lower
- (S) Committee Executive Action--Bill Concurred — **10–0** (pass) · upper
- (H) 2nd Reading Passed — **99–1** (pass) · lower
- (S) 3rd Reading Concurred — **47–3** (pass) · upper
- (S) 2nd Reading Concurred — **47–3** (pass) · upper

## Sponsors

- Tom Welch — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-04-26T19:33:09+00:00** Chapter Number Assigned `became-law`
- **2023-04-26T00:37:00+00:00** (H) Signed by Governor `executive-signature`
- **2023-04-21T16:40:00+00:00** (H) Transmitted to Governor `executive-receipt`
- **2023-04-20T17:01:00+00:00** (S) Signed by President `passage`
- **2023-04-19T18:23:00+00:00** (H) Signed by Speaker `passage`
- **2023-04-14T14:33:44+00:00** (C) Printed - Enrolled Version Available `enrolled`
- **2023-04-14T14:33:33+00:00** (H) Returned from Enrolling
- **2023-04-06T22:50:34+00:00** (H) Sent to Enrolling
- **2023-04-06T21:16:32+00:00** (S) Returned to House
- **2023-04-05T19:57:00+00:00** (S) 3rd Reading Concurred `passage, reading-3`
- **2023-04-05T19:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2023-04-04T20:35:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
- **2023-04-04T19:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2023-03-31T19:10:00+00:00** (S) Committee Report--Bill Concurred
- **2023-03-30T14:00:00+00:00** (S) Committee Executive Action--Bill Concurred
- **2023-03-23T14:00:00+00:00** (S) Hearing
- **2023-03-13T18:13:48+00:00** (S) Referred to Committee `referral-committee`
- **2023-02-22T20:34:53+00:00** (S) First Reading `reading-1`
- **2023-02-22T11:20:00+00:00** (H) Transmitted to Senate
- **2023-02-21T21:44:00+00:00** (H) 3rd Reading Passed `passage, reading-3`
- **2023-02-21T20:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2023-02-17T20:49:00+00:00** (H) 2nd Reading Passed `reading-2, reading-2`
- **2023-02-17T20:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2023-02-14T22:00:13+00:00** (C) Printed - New Version Available
- **2023-02-14T21:33:00+00:00** (H) Committee Report--Bill Passed as Amended `committee-passage`
- **2023-02-14T15:30:00+00:00** (H) Committee Executive Action--Bill Passed as Amended `committee-passage`
- **2023-02-14T14:36:30+00:00** (C) Amendments Available
- **2023-02-08T15:30:47+00:00** (H) Hearing
- **2023-02-01T20:09:24+00:00** (H) First Reading `reading-1`
- **2023-02-01T18:39:38+00:00** (H) Referred to Committee `referral-committee`
- **2023-02-01T16:47:46+00:00** (C) Introduced Bill Text Available Electronically
- **2023-02-01T02:13:31+00:00** (H) Introduced
- **2023-01-30T19:43:54+00:00** (C) Draft Delivered to Requester
- **2023-01-02T23:07:53+00:00** (C) Draft Ready for Delivery
- **2023-01-02T21:31:03+00:00** (C) Executive Director Final Review
- **2023-01-02T21:30:57+00:00** (C) Draft Ready for Delivery
- **2023-01-02T21:08:49+00:00** (C) Executive Director Final Review
- **2023-01-02T21:08:40+00:00** (C) Draft Ready for Delivery
- **2022-12-31T16:39:12+00:00** (C) Draft in Assembly
- **2022-12-31T15:23:34+00:00** (C) Executive Director Review
- **2022-12-30T19:31:06+00:00** (C) Bill Draft Text Available Electronically
- **2022-12-30T19:31:05+00:00** (C) Draft in Final Drafter Review
- **2022-12-29T22:35:14+00:00** (C) Draft in Input/Proofing
- **2022-12-29T21:31:44+00:00** (C) Draft to Drafter - Edit Review
- **2022-12-29T20:17:44+00:00** (C) Draft in Edit
- **2022-12-29T17:25:59+00:00** (C) Draft in Legal Review
- **2022-12-08T20:15:23+00:00** (C) Draft to Requester for Review
- **2022-11-29T21:19:29+00:00** (C) Draft Request Received `receipt`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/3d3238d6-eb44-4afb-b588-9114c167ac50`. Confidence: reported (aggregated from official Montana legislature records).