---
type: "Bill"
title: "CHILDREN/NEWBORNS: Provides relative to cytomegalovirus (CMV) testing for newborns (EN GF EX See Note)"
description: "CHILDREN/NEWBORNS: Provides relative to cytomegalovirus (CMV) testing for newborns (EN GF EX See Note)"
jurisdiction: "us/states/la"
legislature: "Louisiana Legislature"
session: "2023"
identifier: "HB 643"
citation: "Louisiana HB 643 (2023)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Dodie Horton"]
version_count: 9
action_count: 25
vote_count: 3
first_action: "2023-04-24"
last_action: "2023-06-07"
source: "openstates"
source_identifier: "ocd-bill/8d7b9f77-bf11-4709-b656-556ede6974a0"
source_url: "https://www.legis.la.gov/Legis/BillInfo.aspx?i=244855"
source_hash: "b504d2fa5ec4fa5e11e78198c3c45a7d59bb3ef064ea3ba97ea89cf131d2d934"
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 643 (2023) — CHILDREN/NEWBORNS: Provides relative to cytomegalovirus (CMV) testing for newborns (EN GF EX See Note)

## Version chain

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

1. **HB643 Original** (filed) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1314205)
2. **HB643 Act** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1332149)
3. **HB643 Engrossed** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1314337)
4. **HB643 Reengrossed** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1318835)
5. **House Floor Amendment, #2244, Horton, Adopted** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1318184)
6. **Senate Committee Amendment, #1847, H&W, Draft** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1323041)
7. **Senate Committee Amendment, #1850, H&W, Adopted** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1323054)
8. **Senate Legislative Bureau Amendment, #2206, BUREAU, Adopted** (committee substitute) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1325774)
9. **HB643 Enrolled** (enrolled) — [source](https://www.legis.la.gov/Legis/ViewDocument.aspx?d=1328552)

## Votes

- CONCUR IN SENATE AMENDMENTS (#803) — **99–0** (pass) · lower
- FINAL PASSAGE (#215) — **103–0** (pass) · lower
- FINAL PASSAGE (#532) — **39–0** (pass) · upper

## Sponsors

- Dodie Horton — primary (person)

## Timeline

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

- **2023-06-07** Effective date: 08/01/2023.
- **2023-06-07** Signed by the Governor. Becomes Act No. 177. `became-law, executive-signature`
- **2023-06-04** Sent to the Governor for executive approval. `executive-receipt`
- **2023-06-02** Signed by the President of the Senate.
- **2023-06-02** Enrolled and signed by the Speaker of the House. `enrolled`
- **2023-05-31** Read by title, roll called, yeas 99, nays 0, Senate amendments concurred in.
- **2023-05-30** Scheduled for concurrence on 05/31/2023.
- **2023-05-30** Received from the Senate with amendments. `receipt`
- **2023-05-29** Rules suspended. The amended bill was read by title, passed by a vote of 39 yeas and 0 nays, and ordered returned to the House. Motion to reconsider tabled. `passage`
- **2023-05-25** Reported with Legislative Bureau amendments which were read and adopted. Read by title and passed to third reading and final passage. `reading-3`
- **2023-05-24** Read by title and referred to the Legislative Bureau.
- **2023-05-24** Rules suspended. Recalled from Committee.
- **2023-05-18** Read by title. Recommitted to the Committee on Finance.
- **2023-05-18** Senate Committee amendments read and adopted.
- **2023-05-17** Reported with amendments. `committee-passage-favorable`
- **2023-05-08** Read second time by title and referred to the Committee on Health and Welfare. `reading-2, referral-committee`
- **2023-05-04** Received in the Senate. Read first time by title and placed on the Calendar for a second reading. `reading-1`
- **2023-05-03** Read third time by title, roll called on final passage, yeas 103, nays 0. Finally passed, title adopted, ordered to the Senate. `passage`
- **2023-05-03** Called from the calendar.
- **2023-05-01** Scheduled for floor debate on 05/03/2023.
- **2023-05-01** Notice given.
- **2023-05-01** Read by title, returned to the calendar.
- **2023-04-26** Scheduled for floor debate on 05/01/2023.
- **2023-04-25** Read by title, ordered engrossed, passed to 3rd reading. `reading-3`
- **2023-04-24** Read by title, substitute title adopted, lies over in the same order of business, substitute for HB No. 122 reported by the Committee on Health and Welfare (16-0).

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/8d7b9f77-bf11-4709-b656-556ede6974a0`. Confidence: reported (aggregated from official Louisiana legislature records).