---
type: "Bill"
title: "Adopting prior authorization and appropriate use criteria in patient care."
description: "Adopting prior authorization and appropriate use criteria in patient care."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2019-2020"
identifier: "SB 6404"
citation: "Washington SB 6404 (2019-2020)"
classification: ["bill"]
subjects: ["SCHOOLS AND SCHOOL DISTRICTS", "HEALTH CARE AUTHORITY", "INSURANCE COMMISSIONER", "PUBLIC ASSISTANCE", "INSURANCE", "BREE COLLABORATIVE"]
status: "enacted"
primary_sponsors: ["Frockt"]
version_count: 3
action_count: 49
vote_count: 4
first_action: "2020-01-16"
last_action: "2020-04-02"
source: "openstates"
source_identifier: "ocd-bill/d2de4bee-1e7d-40eb-85c0-c38cb7412cf2"
source_url: "http://apps.leg.wa.gov/billinfo/summary.aspx?bill=6404&year=2019"
source_hash: "2f0b83fd5cd032d8246ef662d0da88c2c78b2b0de26e2524f529a8c5a7d49be0"
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-wa"]
---

# Washington SB 6404 (2019-2020) — Adopting prior authorization and appropriate use criteria in patient care.

## Version chain

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

1. **Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2019-20/Htm/Bills/Senate%20Bills/6404.htm)
2. **Engrossed Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2019-20/Htm/Bills/Senate%20Bills/6404-S.E.htm)
3. **Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2019-20/Htm/Bills/Senate%20Bills/6404-S.htm)

## Votes

- Final Passage as Amended by the House (#52) — **46–0** (pass) · upper
- 3rd Reading & Final Passage (#40) — **48–0** (pass) · upper
- Final Passage as Amended by the House (#57) — **97–0** (pass) · lower
- Final Passage as Amended by the House (#22) — **97–0** (pass) · lower

## Sponsors

- Frockt — primary (person)
- Becker — cosponsor (person)
- Conway — cosponsor (person)
- Darneille — cosponsor (person)
- Das — cosponsor (person)
- Dhingra — cosponsor (person)
- Hasegawa — cosponsor (person)
- Kuderer — cosponsor (person)
- Lovelett — cosponsor (person)
- McCoy — cosponsor (person)
- Nguyen — cosponsor (person)
- O'Ban — cosponsor (person)
- Pedersen — cosponsor (person)
- Rivers — cosponsor (person)
- Saldaña — cosponsor (person)
- Wellman — cosponsor (person)
- Wilson, C. — cosponsor (person)

## Timeline

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

- **2020-01-16** First reading, referred to Health & Long Term Care. `reading-1`
- **2020-02-05** HLTC - Majority; 1st substitute bill be substituted, do pass. `passage`
- **2020-02-05** And refer to Ways & Means. `referral-committee`
- **2020-02-06** Referred to Ways & Means.
- **2020-02-11** WM - Majority; do pass 1st substitute bill proposed by Health & Long Term Care.
- **2020-02-11** Minority; without recommendation.
- **2020-02-11** Passed to Rules Committee for second reading.
- **2020-02-17** Placed on second reading by Rules Committee.
- **2020-02-18** 1st substitute bill substituted. `substitution`
- **2020-02-05** HLTC - Majority; 1st substitute bill be substituted, do pass. `passage`
- **2020-02-05** And refer to Ways & Means. `referral-committee`
- **2020-02-06** Referred to Ways & Means.
- **2020-02-11** WM - Majority; do pass 1st substitute bill proposed by Health & Long Term Care.
- **2020-02-11** Minority; without recommendation.
- **2020-02-11** Passed to Rules Committee for second reading.
- **2020-02-17** Placed on second reading by Rules Committee.
- **2020-02-18** 1st substitute bill substituted. `substitution`
- **2020-02-18** Floor amendment(s) adopted.
- **2020-02-18** Rules suspended. Placed on Third Reading.
- **2020-02-18** Third reading, passed; yeas, 48; nays, 0; absent, 0; excused, 1. `reading-3`
- **2020-02-24** First reading, referred to Health Care & Wellness. `reading-1`
- **2020-02-27** HCW - Majority; do pass with amendment(s).
- **2020-02-27** Minority; do not pass.
- **2020-02-28** Referred to Rules 2 Review.
- **2020-03-04** Rules Committee relieved of further consideration. Placed on second reading.
- **2020-03-05** Committee amendment(s) adopted as amended.
- **2020-03-05** Rules suspended. Placed on Third Reading.
- **2020-03-05** Third reading, passed; yeas, 97; nays, 0; absent, 0; excused, 1. `reading-3`
- **2020-03-09** Senate refuses to concur in House amendments. Asks House to recede from amendments.
- **2020-03-10** House receded from amendments.
- **2020-03-10** Rules suspended.
- **2020-03-10** Returned to second reading for amendment.
- **2020-03-10** Floor amendment(s) adopted.
- **2020-03-10** Rules suspended. Placed on Third Reading.
- **2020-03-10** Third reading, passed; yeas, 97; nays, 0; absent, 0; excused, 1. `reading-3`
- **2020-03-10** Senate concurred in House amendments.
- **2020-03-10** Passed final passage; yeas, 46; nays, 0; absent, 0; excused, 3. `passage`
- **2020-03-12** President signed. `passage`
- **2020-03-12** Speaker signed. `passage`
- **2020-03-12** Delivered to Governor.
- **2020-04-02** Governor signed. `executive-signature`
- **2020-04-02** Chapter 316, 2020 Laws. `became-law`
- **2020-04-02** Effective date 6/11/2020. `became-law`
- **2020-01-31T13:00:00+00:00** Scheduled for public hearing in the Senate Committee on Health & Long Term Care at 08:00 AM
- **2020-02-05T18:30:00+00:00** Scheduled for public hearing in the Senate Committee on Health & Long Term Care at 01:30 PM
- **2020-02-10T15:00:00+00:00** Scheduled for public hearing in the Senate Committee on Ways & Means at 10:00 AM
- **2020-02-11T15:00:00+00:00** Scheduled for public hearing in the Senate Committee on Ways & Means at 10:00 AM
- **2020-02-26T18:30:00+00:00** Scheduled for public hearing in the House Committee on Health Care & Wellness at 01:30 PM
- **2020-02-27T18:30:00+00:00** Scheduled for public hearing in the House Committee on Health Care & Wellness at 01:30 PM

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/d2de4bee-1e7d-40eb-85c0-c38cb7412cf2`. Confidence: reported (aggregated from official Washington legislature records).