---
type: "Bill"
title: "Revise laws related to privacy in mental health digital service"
description: "Revise laws related to privacy in mental health digital service"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "HB 397"
citation: "Montana HB 397 (2025)"
classification: ["bill"]
subjects: ["Health Care Services", "Privacy"]
status: "enacted"
primary_sponsors: ["Katie Sullivan"]
version_count: 50
action_count: 38
vote_count: 8
first_action: "2025-01-30T23:28:39+00:00"
last_action: "2025-05-05T15:12:55+00:00"
source: "openstates"
source_identifier: "ocd-bill/4bceb26d-ae40-4fd1-9894-4628671d0f4a"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC4356?open_tab=sum"
source_hash: "3036a2a8f95a6bde39a8497e7281713abac0aa78b679b317cea2e666eed2db37"
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 397 (2025) — Revise laws related to privacy in mental health digital service

## Version chain

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

1. **HB0397.001.002_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284242)
2. **HB0397.002.001_Amendments-in-Context_final-condensed.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=298390)
3. **HB0397.002.001_Amendments-in-Context_final-full(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=298392)
4. **HB0397.002.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=298391)
5. **HB0397_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=279627)
6. **HB0397_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285068)
7. **HB0397_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285069)
8. **HB0397_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285070)
9. **HB0397_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285071)
10. **HB0397_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=279152)
11. **HB0397_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285075)
12. **HB0397_2(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=296453)
13. **HB0397_2(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=300645)
14. **HB0397_2(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301831)
15. **HB0397_2(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301832)
16. **HB0397_2(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301833)
17. **HB0397_2(15).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301834)
18. **HB0397_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285085)
19. **HB0397_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285086)
20. **HB0397_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285159)
21. **HB0397_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285160)
22. **HB0397_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285161)
23. **HB0397_2(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285163)
24. **HB0397_2(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=286863)
25. **HB0397_2(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=287389)
26. **HB0397_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285072)
27. **HB0397_3(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301836)
28. **HB0397_3(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311212)
29. **HB0397_3(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301837)
30. **HB0397_3(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301838)
31. **HB0397_3(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301844)
32. **HB0397_3(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301846)
33. **HB0397_3(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301847)
34. **HB0397_3(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304162)
35. **HB0397_3(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304814)
36. **HB0397_3(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311211)
37. **HB0397_3.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=301835)
38. **HB0397_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311214)
39. **HB0397_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324646)
40. **HB0397_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=327140)
41. **HB0397_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311215)
42. **HB0397_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311451)
43. **HB0397_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311452)
44. **HB0397_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=317011)
45. **HB0397_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320580)
46. **HB0397_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321444)
47. **HB0397_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321445)
48. **HB0397_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321446)
49. **HB0397_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=311213)
50. **LC4356.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=278460)

## Votes

- Do Concur — **100–0** (pass) · lower
- Do Concur — **50–0** (pass) · upper
- do_pass_as_amended — **21–0** (pass) · lower
- Do Concur — **49–1** (pass) · upper
- be_concurred_in_as_amended — **8–3** (pass) · upper
- Do Concur — **97–0** (pass) · lower
- Do Pass — **100–0** (pass) · lower
- Do Pass — **99–0** (pass) · lower

## Sponsors

- Katie Sullivan — primary (person)

## Timeline

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

- **2025-01-30T23:28:39+00:00** (LC) Drafter Assigned
- **2025-02-03T19:37:51+00:00** (LC) Draft in Legal Review
- **2025-02-03T20:56:34+00:00** (LC) Draft in Edit
- **2025-02-03T21:12:36+00:00** (LC) Draft in Input/Proofing
- **2025-02-03T21:26:30+00:00** (LC) Draft in Final Drafter Review
- **2025-02-03T21:33:15+00:00** (LC) Draft in Assembly
- **2025-02-03T21:42:28+00:00** (LC) Draft Ready for Delivery
- **2025-02-05T16:23:57+00:00** (LC) Draft Delivered to Requester
- **2025-02-05T20:07:31+00:00** (H) Introduced
- **2025-02-06T17:55:25+00:00** (H) Referred to Committee - (H) Human Services `referral-committee`
- **2025-02-06T20:21:00+00:00** (H) First Reading `reading-1`
- **2025-02-07T16:14:46+00:00** (H) Hearing - (H) Human Services
- **2025-02-19T23:44:35+00:00** (H) Committee Executive Action--Bill Passed as Amended - (H) Human Services `committee-passage`
- **2025-02-20T20:13:00+00:00** (H) Committee Report--Bill Passed as Amended - (H) Human Services `committee-passage`
- **2025-02-22T16:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-02-22T17:29:00+00:00** (H) 2nd Reading Passed `reading-2, reading-2`
- **2025-02-24T22:10:00+00:00** (H) 3rd Reading Passed `passage, reading-3`
- **2025-02-24T22:29:09+00:00** (H) Transmitted to Senate
- **2025-03-03T18:22:57+00:00** (S) Referred to Committee - (S) Public Health, Welfare and Safety `referral-committee`
- **2025-03-20T17:58:27+00:00** (S) Hearing - (S) Public Health, Welfare and Safety
- **2025-03-28T23:27:38+00:00** (S) Committee Executive Action--Bill Concurred as Amended - (S) Public Health, Welfare and Safety
- **2025-03-31T19:20:00+00:00** (S) Committee Report--Bill Concurred as Amended - (S) Public Health, Welfare and Safety
- **2025-04-02T19:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-04-02T21:54:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-03T19:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-04-03T19:33:00+00:00** (S) 3rd Reading Concurred `passage, reading-3`
- **2025-04-03T21:27:49+00:00** (S) Returned to House with Amendments
- **2025-04-14T19:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-14T20:29:00+00:00** (H) 2nd Reading Senate Amendments Concurred `amendment-amendment, amendment-passage, reading-2, reading-2`
- **2025-04-15T19:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-15T20:37:00+00:00** (H) 3rd Reading Passed as Amended by Senate `passage, passage, reading-3, reading-3`
- **2025-04-15T22:10:55+00:00** (H) Sent to Enrolling
- **2025-04-16T04:35:33+00:00** (H) Returned from Enrolling
- **2025-04-18T20:50:00+00:00** (H) Signed by Speaker `passage`
- **2025-04-22T13:30:24+00:00** (S) Signed by President `passage`
- **2025-04-22T18:10:24+00:00** (H) Transmitted to Governor `executive-receipt`
- **2025-05-01T21:14:29+00:00** (H) Signed by Governor `executive-signature`
- **2025-05-05T15:12:55+00:00** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/4bceb26d-ae40-4fd1-9894-4628671d0f4a`. Confidence: reported (aggregated from official Montana legislature records).