---
type: "Bill"
title: "INSURANCE: Authorizes substitution of certain biosimilar biological products relative to step therapy or fail first protocols"
description: "INSURANCE: Authorizes substitution of certain biosimilar biological products relative to step therapy or fail first protocols"
jurisdiction: "us/states/la"
legislature: "Louisiana Legislature"
session: "2023"
identifier: "HB 403"
citation: "Louisiana HB 403 (2023)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Chad Brown"]
version_count: 4
action_count: 20
vote_count: 2
first_action: "2023-03-30"
last_action: "2023-06-06"
source: "openstates"
source_identifier: "ocd-bill/9ecb7b35-d819-47e7-b7f5-46f5ed72ad39"
source_url: "https://www.legis.la.gov/Legis/BillInfo.aspx?i=244326"
source_hash: "ec41248c14dfe32ae56a635c2d0c26e839cda0e686e829e452584bfad5399297"
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-la"]
---

# Louisiana HB 403 (2023) — INSURANCE: Authorizes substitution of certain biosimilar biological products relative to step therapy or fail first protocols

## Version chain

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

1. **HB403 Original** (filed) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1308571)
2. **HB403 Act 125** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1332004)
3. **HB403 Engrossed** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1318007)
4. **HB403 Enrolled** (enrolled) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1327029)

## Votes

- FINAL PASSAGE (#540) — **39–0** (pass) · upper
- FINAL PASSAGE (#359) — **92–0** (pass) · lower

## Sponsors

- Chad Brown — primary (person)

## Timeline

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

- **2023-06-06** Effective date: 08/01/2023.
- **2023-06-06** Signed by the Governor. Becomes Act No. 125. `became-law, executive-signature`
- **2023-06-01** Sent to the Governor for executive approval. `executive-receipt`
- **2023-05-31** Signed by the President of the Senate.
- **2023-05-31** Enrolled and signed by the Speaker of the House. `enrolled`
- **2023-05-30** Received from the Senate without amendments. `receipt`
- **2023-05-29** Rules suspended. Read by title, passed by a vote of 39 yeas and 0 nays, and ordered returned to the House. Motion to reconsider tabled. `passage`
- **2023-05-26** Reported without Legislative Bureau amendments. Read by title and passed to third reading and final passage. `reading-3`
- **2023-05-25** Read by title and referred to the Legislative Bureau.
- **2023-05-24** Reported favorably. `committee-passage-favorable`
- **2023-05-16** Read second time by title and referred to the Committee on Insurance. `reading-2, referral-committee`
- **2023-05-15** Received in the Senate. Read first time by title and placed on the Calendar for a second reading. `reading-1`
- **2023-05-11** Read third time by title, roll called on final passage, yeas 92, nays 0. Finally passed, title adopted, ordered to the Senate. `passage`
- **2023-05-04** Scheduled for floor debate on 05/11/2023.
- **2023-05-03** Read by title, ordered engrossed, passed to 3rd reading. `reading-3`
- **2023-05-02** Reported favorably (11-0). `committee-passage-favorable`
- **2023-04-10** Read by title, under the rules, referred to the Committee on Insurance. `referral-committee`
- **2023-04-03** First appeared in the Interim Calendar on 4/3/2023.
- **2023-03-30** Under the rules, provisionally referred to the Committee on Insurance. `referral-committee`
- **2023-03-30** Prefiled. `filing`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/9ecb7b35-d819-47e7-b7f5-46f5ed72ad39`. Confidence: reported (aggregated from official Louisiana legislature records).