---
type: "Bill"
title: "Maryland Medical Assistance Program and Health Insurance - Collaborative Care Model - Cost Sharing Prohibition"
description: "Maryland Medical Assistance Program and Health Insurance - Collaborative Care Model - Cost Sharing Prohibition"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2026"
identifier: "SB 428"
citation: "Maryland SB 428 (2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Augustine"]
version_count: 4
action_count: 18
vote_count: 3
first_action: "2026-01-30"
last_action: "2026-05-26"
source: "openstates"
source_identifier: "ocd-bill/9ca5157c-e3be-41d5-a419-7408a65e6d97"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/sb0428?ys=2026RS"
source_hash: "acf8295ee3c36505816a245902ec8f71ff0a3c13abb01d3bc4bd41cfe672086e"
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 SB 428 (2026) — Maryland Medical Assistance Program and Health Insurance - Collaborative Care Model - Cost Sharing Prohibition

## Version chain

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

1. **Chapter - Maryland Medical Assistance Program and Health Insurance - Collaborative Care Model - Cost Sharing Prohibition** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/Chapters_noln/CH_614_sb0428e.pdf)
2. **Enrolled - Maryland Medical Assistance Program and Health Insurance - Collaborative Care Model - Cost Sharing Prohibition** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/sb/sb0428e.pdf)
3. **First - Maryland Medical Assistance Program and Health Insurance - Collaborative Care Model - Cost Sharing Prohibition** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/sb/sb0428f.pdf)
4. **Third - Maryland Medical Assistance Program and Health Insurance - Collaborative Care Model - Cost Sharing Prohibition** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/sb/sb0428t.pdf)

## Votes

- On Third Reading (Amend) — **129–5** (pass) · lower
- On Third Reading — **45–0** (pass) · upper
- Bill is on Third Reading for Final Passage. — **42–0** (pass) · upper

## Sponsors

- Augustine — primary (person)

## Timeline

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

- **2026-01-30** First Reading Finance `referral-committee`
- **2026-02-04** Hearing 2/18 at 1:00 p.m.
- **2026-03-09** Favorable Report by Finance `committee-passage-favorable`
- **2026-03-10** Favorable Adopted `committee-passage-favorable`
- **2026-03-10** Second Reading Passed
- **2026-03-12** Third Reading Passed `passage`
- **2026-03-13** Referred Health `referral-committee`
- **2026-03-17** Hearing 3/26 at 1:00 p.m.
- **2026-03-25** Hearing canceled
- **2026-03-25** Hearing 3/26 at 2:00 p.m.
- **2026-04-01** Favorable with Amendments Report by Health `committee-passage-favorable`
- **2026-04-01** Favorable with Amendments { `committee-passage-favorable`
- **2026-04-01** Second Reading Passed with Amendments
- **2026-04-02** Third Reading Passed `passage`
- **2026-04-03** Senate Concurs House Amendments
- **2026-04-03** Third Reading Passed `passage`
- **2026-04-03** Passed Enrolled
- **2026-05-26** Approved by the Governor - Chapter 614 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/9ca5157c-e3be-41d5-a419-7408a65e6d97`. Confidence: reported (aggregated from official Maryland legislature records).