---
type: "Bill"
title: "Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period"
description: "Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2026"
identifier: "HB 684"
citation: "Maryland HB 684 (2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: []
version_count: 3
action_count: 18
vote_count: 2
first_action: "2026-02-02"
last_action: "2026-05-26"
source: "openstates"
source_identifier: "ocd-bill/0e04d776-3ecd-41db-901f-d17aef72b5f4"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0684?ys=2026RS"
source_hash: "ba33cd7d6d2b8ce969ceafbfa0f6093ba618f9507b6067466a1de83c52461984"
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-md"]
---

# Maryland HB 684 (2026) — Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period

## Version chain

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

1. **Chapter - Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/Chapters_noln/CH_651_hb0684t.pdf)
2. **First - Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/hb/hb0684f.pdf)
3. **Third - Health Insurance - Material Changes to Provider Networks - Notification and Special Enrollment Period** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/hb/hb0684t.pdf)

## Votes

- On Third Reading — **47–0** (pass) · upper
- On Third Reading — **126–7** (pass) · lower

## Sponsors

- Chair, Health Committee — primary (organization)

## Timeline

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

- **2026-02-02** First Reading Health `referral-committee`
- **2026-02-04** Hearing 2/12 at 1:00 p.m.
- **2026-02-05** Hearing canceled
- **2026-02-05** Hearing 2/19 at 1:00 p.m.
- **2026-02-19** Hearing canceled
- **2026-02-19** Hearing 2/19 at 1:30 p.m.
- **2026-03-16** Favorable with Amendments Report by Health `committee-passage-favorable`
- **2026-03-17** Favorable with Amendments { `committee-passage-favorable`
- **2026-03-17** Second Reading Passed with Amendments
- **2026-03-18** Third Reading Passed `passage`
- **2026-03-19** Referred Finance `referral-committee`
- **2026-03-20** Hearing 3/25 at 1:00 p.m.
- **2026-04-10** Favorable Report by Finance `committee-passage-favorable`
- **2026-04-10** Favorable Adopted `committee-passage-favorable`
- **2026-04-10** Second Reading Passed
- **2026-04-13** Third Reading Passed `passage`
- **2026-04-13** Returned Passed
- **2026-05-26** Approved by the Governor - Chapter 651 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/0e04d776-3ecd-41db-901f-d17aef72b5f4`. Confidence: reported (aggregated from official Maryland legislature records).