---
type: "Bill"
title: "Health Insurance - Mental Health and Substance Use Disorders - Codification of Federal Requirements"
description: "Health Insurance - Mental Health and Substance Use Disorders - Codification of Federal Requirements"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2026"
identifier: "HB 280"
citation: "Maryland HB 280 (2026)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: []
version_count: 3
action_count: 13
vote_count: 1
first_action: "2025-09-16"
last_action: "2026-04-14"
source: "openstates"
source_identifier: "ocd-bill/304ae621-bbe8-4c1b-8491-3308a6a1bb68"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0280?ys=2026RS"
source_hash: "1583209ba812fcfcd2b89e04c8d25ca4dc948660755a23535509b1f93a71183d"
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 280 (2026) — Health Insurance - Mental Health and Substance Use Disorders - Codification of Federal Requirements

## Version chain

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

1. **Chapter - Health Insurance - Mental Health and Substance Use Disorders - Codification of Federal Requirements** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/Chapters_noln/CH_11_hb0280t.pdf)
2. **First - Health Insurance - Mental Health and Substance Use Disorders - Codification of Federal Requirements** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/hb/hb0280f.pdf)
3. **Third - Health Insurance - Mental Health and Substance Use Disorders - Codification of Federal Requirements** (committee substitute) — [source](http://mgaleg.maryland.gov/2026RS/bills/hb/hb0280t.pdf)

## Votes

- On Third Reading — **93–35** (pass) · lower

## Sponsors

- Chair, Health Committee — primary (organization)

## Timeline

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

- **2025-09-16** Pre-filed `introduction`
- **2026-01-14** First Reading Health `referral-committee`
- **2026-01-20** Hearing 1/29 at 2:00 p.m.
- **2026-03-03** Favorable Report by Health `committee-passage-favorable`
- **2026-03-03** Favorable Adopted `committee-passage-favorable`
- **2026-03-03** Second Reading Passed
- **2026-03-04** Third Reading Passed `passage`
- **2026-03-05** Referred Finance `referral-committee`
- **2026-03-30** Favorable Report by Finance `committee-passage-favorable`
- **2026-03-31** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2026-04-06** Third Reading Passed `passage`
- **2026-04-07** Returned Passed
- **2026-04-14** Approved by the Governor - Chapter 11 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/304ae621-bbe8-4c1b-8491-3308a6a1bb68`. Confidence: reported (aggregated from official Maryland legislature records).