Add Washington State Supplementary Payment (SSP) by hua7450 · Pull Request #8157 · PolicyEngine/policyengine-us

hua7450 · 2026-04-25T23:01:01Z

Summary

Implements Washington's State Supplementary Payment (SSP) — flat-rate state cash supplement on top of federal SSI for aged, blind, disabled, and ineligible-spouse recipients, plus a separate medical-institution rate.

Closes #1009

Regulatory Authority

WAC 388-478-0055 — Monthly state supplementary payment standards: https://app.leg.wa.gov/wac/default.aspx?cite=388-478-0055
WAC 388-474-0012 — SSP eligibility categories: https://app.leg.wa.gov/wac/default.aspx?cite=388-474-0012
WAC 388-474-0001 — SSI definitions and grandfathered status: https://app.leg.wa.gov/wac/default.aspx?cite=388-474-0001
WAC 388-478-0057 — End-of-year SSP rate adjustment mechanism: https://app.leg.wa.gov/wac/default.aspx?cite=388-478-0057
WSR 24-06-025 (eff. 2024-04-01, current standard rate): https://lawfilesext.leg.wa.gov/law/wsr/2024/06/24-06-025.htm
WSR 23-14-065 (eff. 2023-07-01, emergency rule per HB 1128 — added standalone disabled category, raised MED rate to $70): https://lawfilesext.leg.wa.gov/law/wsr/2023/14/23-14-065.htm
WSR 23-24-009 (eff. 2023-12-28, permanent successor to WSR 23-14-065): https://lawfilesext.leg.wa.gov/law/wsr/2023/24/23-24-009.htm
DSHS ESA Z Manual — SSI and SSP: https://www.dshs.wa.gov/esa/eligibility-z-manual-ea-z/supplemental-security-income-and-state-supplemental-payment

Program Overview

Administration: State-administered (Washington DSHS — ESA issues via ACES; DDA issues for developmental-disability clients)
Funding: State funds only (administration + benefit)
Current caseload: 33,308 recipients (Jan 2011, SSA State Assistance Programs report — newer figures unavailable since SSA does not publish for state-administered programs)
Enrollment status: Closed to new enrollees as of 2023 except via the DDA Pre-Vocational Legacy (PVL) track

Eligibility

Requirement	Source	How Modeled
Must be SSI-eligible (categorical)	WAC 388-474-0012	`is_ssi_eligible`
Must actually receive SSI (income test)	DSHS ESA Z Manual	`ssi > 0`
Must reside in Washington	WAC 388-474-0012	`defined_for = StateCode.WA`
Must fall in qualifying category	WAC 388-474-0012	`wa_ssp_payment_category != NONE`
Aged 65+	WAC 388-474-0012(3)	`is_ssi_aged` -> STANDARD
Blind	WAC 388-474-0012(4)	`is_blind` -> STANDARD
Disabled (only on/after 2023-07-01)	WAC 388-474-0012(2)(e); WSR 23-14-065 (emergency rule, HB 1128); WSR 23-24-009 (permanent)	`is_ssi_disabled` gated by `eligibility/disabled_category/in_effect.yaml` -> STANDARD
SSI recipient with ineligible spouse	WAC 388-474-0012(2)	marital unit has 2 persons and exactly 1 is `is_ssi_eligible` -> STANDARD
Medical institution resident	WAC 388-474-0012(8); WAC 388-478-0055	`ssi_federal_living_arrangement == MEDICAL_TREATMENT_FACILITY` -> MEDICAL_INSTITUTION
Living arrangement codes A/B/C -> STANDARD; code D -> MEDICAL_INSTITUTION	DSHS ESA Z Manual	Federal living-arrangement enum routes code D to MEDICAL_INSTITUTION; A/B/C fall through to STANDARD
Grandfathered (MIL) recipients	WAC 388-474-0012(1), 388-474-0001	Not modeled (variable per-person amounts $0.54-$199.77 require microdata)
DDA-determined / PVL track	WAC 388-474-0012(6)	Not modeled (discretionary determination, no DDA status input)
Foster child in BRS	WAC 388-474-0012(7)	Not modeled (narrow population, no CPS proxy)

Benefit Amounts (WAC 388-478-0055)

Category	Effective	Monthly Amount	Source
Standard (aged/blind/disabled/ineligible-spouse)	2006-08-28	$46.00	WSR 06-16-071
Standard	2013-12-01	$40.00	WSR 13-22-037
Standard	2021-01-01	$38.25	WSR 20-23-053
Standard	2024-04-01	$35.50	WSR 24-06-025
Medical institution	2006-08-28	$23.68	WSR 06-16-071
Medical institution	2007-11-26	$25.45	WSR 07-22-022
Medical institution	2008-09-01	$27.28	WSR 08-16-067
Medical institution	2019-01-01	$40.00	WSR 18-24-032
Medical institution	2023-07-01	$70.00	WSR 23-14-065 (emergency rule, HB 1128 institutional PNA increase); WSR 23-24-009 made permanent 2023-12-28
Medical institution	2024-01-01	$73.20	HCA institutional PNA $103.20 − $30 federal SSI institutional PNA (WAC 182-513-1105(5); annual SSA COLA per WAC 388-478-0057)
Medical institution	2025-01-01	$75.78	HCA institutional PNA $105.78 − $30
Medical institution	2026-01-01	$78.74	HCA institutional PNA $108.74 − $30 (HCA 19-0096 (01/26))

Couple treatment: individual rate per person — no couple reduction; each eligible spouse independently receives the per-category rate (confirmed by SSA 2011 State Assistance Programs report Table 1 for Washington).

COLA / institutional-PNA pegging: From 2023-07-01 forward, the MEDICAL_INSTITUTION rate equals the WA Apple Health institutional Personal Needs Allowance (PNA) under WAC 182-513-1105(5) minus the $30 federal SSI institutional PNA. The institutional PNA increases annually by SSA COLA from 2024-01-01 per WAC 388-478-0057, so the SSP rate uprates accordingly. Future maintainers updating the rate should consult HCA Apple Health Income Standards rather than apply a mechanical SSA-COLA to $70. Standard rate has historically been adjusted (often reduced) under WAC 388-478-0057 to keep total SSP spending flat as caseload grows.

Not Modeled (by design)

What	Source	Why Excluded
Grandfathered (MIL) recipients and variable rate $0.54-$199.77	WAC 388-474-0012(1), 388-474-0001, 388-478-0055	Variable per-person amounts set per individual based on 1974 grandfather amount; we don't track 1973/1974 enrollment or per-person grandfather amounts at the moment
DDA-determined / PVL track eligibility	WAC 388-474-0012(6)	Discretionary determination requiring DDA caseload, prevocational-exit history, and residential-service status; we don't track DDA status at the moment
Foster child in Children's Administration BRS	WAC 388-474-0012(7)	Narrow population not identified in CPS
Special Needs payments (guide dog, restaurant meals, laundry, telephone, home-delivered meals)	DSHS ESA Manual / SSA 2011 report	Separate ESA/DEAP program, situational, not part of WAC 388-478-0055
POMS SI 01210.620 blind income disregards	https://secure.ssa.gov/apps10/poms.nsf/lnx/0501210620	Handled upstream by federal SSI; WA SSP rate is independent of income
2023 closed-to-new-enrollees freeze	WAC 388-474-0012 (2023 amendment context)	We don't track enrollment date at the moment, so the model treats anyone meeting categorical criteria as eligible — overstates true post-2023 caseload

Files

policyengine_us/parameters/gov/states/wa/dshs/ssp/
  amount.yaml
  eligibility/disabled_category/in_effect.yaml

policyengine_us/variables/gov/states/wa/dshs/ssp/
  wa_ssp.py
  wa_ssp_payment_category.py

policyengine_us/tests/policy/baseline/gov/states/wa/dshs/ssp/
  wa_ssp.yaml
  wa_ssp_payment_category.yaml
  integration.yaml
  edge_cases.yaml

Also modified:

policyengine_us/variables/household/income/spm_unit/spm_unit_benefits.py (added wa_ssp to BENEFITS)
policyengine_us/parameters/gov/household/household_state_benefits.yaml (added wa_ssp in 2023 and 2024 sections)
policyengine_us/programs.yaml (added WA entry under ssi_state_supplement.state_implementations)

Verification (resolved by /review-program)

Payment amounts verified against WAC 388-478-0055 amendment history (WSRs 06-16-071, 07-22-022, 08-16-067, 13-22-037, 18-24-032, 20-23-053, 23-14-065 [emergency], 23-24-009 [permanent], 24-06-025) and HCA Apple Health Income Standards PDFs for 2024/2025/2026 institutional PNA values
Eligibility logic verified against WAC 388-474-0012 — disabled and medical-institution categories added by WSR 23-14-065 (emergency, eff. 2023-07-01 per HB 1128) and made permanent by WSR 23-24-009 (eff. 2023-12-28)
Amounts verified for 2017-2026 with attention to the 2013-12, 2019-01, 2021-01, 2023-07, and 2024-04 transitions
CI passes

Test plan

Unit tests for wa_ssp amount by category and date (wa_ssp.yaml)
Unit tests for wa_ssp_payment_category derivation across all categories and pre/post-2023-07-01 disabled gating (wa_ssp_payment_category.yaml)
Integration tests covering the 8 required scenarios — aged, blind, disabled (post-2023), ineligible-spouse, aged couple, medical institution, wrong-state, historical 2010 and 2020 rates (integration.yaml)
Edge-case tests covering disabled-only pre/post-2023-07-01, historical rate transitions, medical-institution couple, non-WA state, ineligible-spouse pairing, SSI-eligible-but-not-receiving, aged 64↔65 boundary, living-arrangement enum coverage, disabled+MED priority, and 2017/2026 rate boundaries (edge_cases.yaml, wa_ssp.yaml, wa_ssp_payment_category.yaml)
CI passes

Requirements Coverage

REQ	Description	Param	Variable	Test
REQ-001	Defined for State Code WA	n/a	`wa_ssp.py`, `wa_ssp_payment_category.py` (`defined_for=StateCode.WA`)	`integration.yaml` Case 8; `edge_cases.yaml` Case 12
REQ-002	Person must be SSI-eligible	n/a	`wa_ssp_payment_category.py` (`is_ssi_eligible`)	`wa_ssp_payment_category.yaml` "Not SSI eligible -> NONE"
REQ-003	Person must actually receive SSI (`ssi > 0`)	n/a	`wa_ssp_payment_category.py` (`person("ssi", period) > 0`)	`wa_ssp_payment_category.yaml` "SSI eligible but not actually receiving SSI"; `edge_cases.yaml` Case 11
REQ-004	Must fall in qualifying category	n/a	`wa_ssp_payment_category.py` select branches	`wa_ssp_payment_category.yaml` (all categories)
REQ-005	Aged 65+ -> STANDARD	n/a	`wa_ssp_payment_category.py` (`is_ssi_aged`)	`wa_ssp_payment_category.yaml` "Aged SSI recipient -> STANDARD"; `integration.yaml` Case 1
REQ-006	Blind -> STANDARD	n/a	`wa_ssp_payment_category.py` (`is_blind`)	`wa_ssp_payment_category.yaml` "Blind -> STANDARD"; `integration.yaml` Case 2
REQ-007	Disabled -> STANDARD on/after 2023-07-01	`eligibility/disabled_category/in_effect.yaml` (false -> true 2023-07-01 per WSR 23-14-065 emergency rule, permanent via WSR 23-24-009)	`wa_ssp_payment_category.py` (gated `is_ssi_disabled`)	`wa_ssp_payment_category.yaml` "Disabled-only before/after 2023-07-01"; `integration.yaml` Cases 3+4; `edge_cases.yaml` Cases 1+2
REQ-008	SSI recipient with ineligible spouse -> STANDARD	n/a	`wa_ssp_payment_category.py` (marital_unit detection)	`wa_ssp_payment_category.yaml` "ineligible spouse -> STANDARD"; `integration.yaml` Case 4; `edge_cases.yaml` Case 10
REQ-009	Medical institution resident -> MEDICAL_INSTITUTION	n/a	`wa_ssp_payment_category.py` (`ssi_federal_living_arrangement == MEDICAL_TREATMENT_FACILITY`)	`wa_ssp_payment_category.yaml` "medical institution"; `integration.yaml` Case 6; `edge_cases.yaml` Cases 5/6/8/13/14/15
REQ-013	Standard rate by date (46 -> 40 -> 38.25 -> 35.50)	`amount.yaml` STANDARD breakpoints	`wa_ssp.py` formula	`wa_ssp.yaml`; `edge_cases.yaml` Cases 3/4/7
REQ-014	Medical-institution rate by date (23.68 -> 25.45 -> 27.28 -> 40 -> 70 -> 73.20 -> 75.78 -> 78.74)	`amount.yaml` MEDICAL_INSTITUTION breakpoints (2024+ from HCA institutional PNA − $30)	`wa_ssp.py` formula	`wa_ssp.yaml`; `edge_cases.yaml` Cases 5/6/13/14/15
REQ-016	No couple rate; per-person individual rate	`amount.yaml` (single per-category rate)	`wa_ssp.py` (no couple aggregation)	`edge_cases.yaml` Case 9; `integration.yaml` Case 5
REQ-017	Ineligible spouse receives $0	n/a	Falls out via `is_ssi_eligible == False` -> NONE category	`wa_ssp_payment_category.yaml` "ineligible spouse" output `[STANDARD, NONE]`
REQ-018	Living arrangement codes A/B/C -> STANDARD; D -> MEDICAL_INSTITUTION	n/a	`wa_ssp_payment_category.py` via `ssi_federal_living_arrangement` enum	`wa_ssp_payment_category.yaml`; `edge_cases.yaml` medical-institution cases
REQ-021	Core variables `definition_period = MONTH`	`amount.yaml` `period: month`	`wa_ssp.py`, `wa_ssp_payment_category.py` (`MONTH`)	All tests use `period: YYYY-MM`
REQ-022	`wa_ssp` in `spm_unit_benefits.py` BENEFITS	n/a	`spm_unit_benefits.py` BENEFITS list	Integration via SPM-unit benefit aggregation
REQ-023	`wa_ssp` in `household_state_benefits.yaml` (2023 + 2024)	`household_state_benefits.yaml` 2023 + 2024 sections	n/a	n/a
REQ-024	WA in `programs.yaml` `ssi_state_supplement.state_implementations`	`programs.yaml` (status: partial — modeled (2)(a)/(2)(c) tracks; (2)(b) grandfathered MIL, (2)(f) DDA/PVL, (2)(g) BRS foster-child paths unmodeled)	n/a	n/a

Historical Notes

Standard-rate timeline (per WAC 388-478-0055 amendment history):

              Standard      Medical-inst.    WSR / Source
2006-08-28    $46.00        $23.68           06-16-071
2007-11-26    $46.00        $25.45           07-22-022
2008-09-01    $46.00        $27.28           08-16-067
2013-12-01    $40.00        $27.28           13-22-037
2019-01-01    $40.00        $40.00           18-24-032        <- HB-era institutional rate raise
2021-01-01    $38.25        $40.00           20-23-053        <- standard reduced (388-478-0057 mechanism)
2023-07-01    $38.25        $70.00           23-14-065 (emer.) <- HB 1128: institutional PNA increase + disabled/medical-institution categories added
2023-12-28    $38.25        $70.00           23-24-009        <- permanent successor to emergency rule
2024-01-01    $38.25        $73.20           HCA PNA $103.20−$30 (annual COLA per WAC 388-478-0057)
2024-04-01    $35.50        $73.20           24-06-025        <- standard reduced again
2025-01-01    $35.50        $75.78           HCA PNA $105.78−$30
2026-01-01    $35.50        $78.74           HCA PNA $108.74−$30

Notes:

Standard-rate decreases are intentional: WAC 388-478-0057 (https://app.leg.wa.gov/wac/default.aspx?cite=388-478-0057) authorizes DSHS to reduce SSP rates at end of calendar year to keep total SSP spending flat as caseload grows. The 2021-01-01 reduction from $40 to $38.25 and the 2024-04-01 reduction from $38.25 to $35.50 both reflect this counter-cyclical mechanism, not a coding error.
2023-07-01 emergency rule (WSR 23-14-065): per HB 1128 (2023 c 201), added "disabled" as a standalone qualifying category and added "medical institution resident" as a standalone category in WAC 388-474-0012, and raised the institutional rate from $40 to $70. The model gates the disabled category via the eligibility/disabled_category/in_effect.yaml parameter (false → true at 2023-07-01) so pre-2023-07-01 periods correctly exclude disabled-only recipients. WSR 23-24-009 made these changes permanent effective 2023-12-28.
HB 1128 (2023 c 201): drove the institutional-PNA increase from $40 to $70 effective 2023-07-01 (emergency rule), permanent 2023-12-28.
Institutional rate post-2023-07-01: tracks WA Apple Health institutional Personal Needs Allowance (PNA) under WAC 182-513-1105(5) minus the $30 federal SSI institutional PNA. Annual SSA-COLA on the PNA from 2024-01-01 per WAC 388-478-0057. Future maintainers must update from HCA Income Standards (e.g., HCA 19-0096 (01/26)), not by mechanically applying SSA COLA to $70.
No SSA factsheet (EN-05-11XXX): WA is state-administered, so SSA does not publish a combined federal+state factsheet. Historical caseload corroboration draws from the SSA 2011 State Assistance Programs report (Washington), the most recent published.

Closes PolicyEngine#1009 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

State Supplementary Payment for SSI recipients in Washington (DSHS, state-administered). Two-rate flat structure: STANDARD ($35.50 since 2024-04-01) for aged/blind/disabled/ineligible-spouse, MEDICAL_INSTITUTION ($70 since 2023-12-28) for Title XIX residents. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

codecov · 2026-04-26T00:07:25Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.88%. Comparing base (d55cd4f) to head (e5d4cfe).
⚠️ Report is 15 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##              main    #8157       +/-   ##
============================================
- Coverage   100.00%   88.88%   -11.12%     
============================================
  Files            2        3        +1     
  Lines           35       54       +19     
  Branches         0        2        +2     
============================================
+ Hits            35       48       +13     
- Misses           0        6        +6

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- Backdate $70 medical-institution rate from 2023-12-28 to 2023-07-01 (operational date per emergency rule WSR 23-14-065, driven by HB 1128; WSR 23-24-009 is the permanent codification at 2023-12-28). - Correct subsection citation in disabled_category/in_effect.yaml from WAC 388-474-0012(5) to (2)(e) — the rule has only top-level (1) and (2) with categories at (2)(a)-(h). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Backdate disabled-category in_effect from 2023-12-28 to 2023-07-01 to match the medical-institution rate backdate from round 1. WSR 23-14-065 (emergency, eff. 2023-07-01) added the (2)(e) standalone disabled qualifying category and the (2)(h) medical-institution category in the same rule that raised the medical-institution rate per HB 1128. Round 1 applied the backdate to amount.yaml but missed in_effect.yaml. Also update the stale (5) subsection comment in wa_ssp_payment_category.py to (2)(e) so it matches the corrected parameter citation. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Captures generalized rules from /encode-policy-v2 run for WA SSP: - Emergency vs permanent WSR effective dates - Subsection citation verification against rule structure - Holistic backdate application across related parameters - Cross-reference alignment when fixing citations Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

The medical institution rate has annual COLA from 2024-01-01 forward (73.20 in 2024, 75.78 in 2025, 78.74 in 2026). Update Case 8 in edge_cases.yaml and Case 6 in integration.yaml to expect 75.78 at 2025-01 instead of the pre-COLA 70 value. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

References & metadata - amount.yaml: drop redundant "monthly"; cite WAC 388-478-0055 with subsections (2)(a) STANDARD / (2)(c) MEDICAL_INSTITUTION; add WAC 388-478-0057 (COLA-adjustment authority); annotate HCA Income Standards PDFs with "(see institutional PNA table)"; document the PNA-pegging formula in the description. - disabled_category/in_effect.yaml: reframe WSR 23-14-065 (emergency, 2023-07-01) as primary authority; WSR 23-24-009 as permanent successor. - programs.yaml: WA SSP status changed from `complete` to `partial`; notes list unmodeled (2)(b) grandfathered MIL, (2)(f) DDA/PVL, (2)(g) BRS foster-child paths. Documentation - wa_ssp.py: add 7-line comment in formula explaining MEDICAL_INSTITUTION rate from 2023-07-01 = WA Apple Health institutional PNA per WAC 182-513-1105(5) minus $30 federal SSI institutional PNA, with annual SSA COLA from 2024-01-01 per WAC 388-478-0057. - wa_ssp_payment_category.py: brief pointer above MEDICAL_INSTITUTION enum value. Tests (8 new cases) - edge_cases.yaml: couple both in MED_INST; disabled in MED_INST post-2023-07-01. - wa_ssp.yaml: 2017 historical period; 2026 STANDARD rate. - wa_ssp_payment_category.yaml: aged 64 vs 65 boundary; living-arrangement enum coverage (codes A/B/C combined since indistinguishable through boolean-flag inputs, code D separate). 49/49 WA SSP tests pass (was 41). 231 WA tests pass. Format clean. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

PavelMakarchuk · 2026-05-01T15:37:19Z

Fixes Applied — `/review-program` follow-up

Commit 31a2d33 applies all SHOULD-Address findings plus actionable suggestions. 49 / 49 WA SSP tests pass locally (was 41); 231 WA tests pass; make format clean.

References & metadata

amount.yaml: dropped redundant "monthly"; cited WAC 388-478-0055 with subsections (2)(a) for STANDARD and (2)(c) for MEDICAL_INSTITUTION; added WAC 388-478-0057 (COLA-adjustment authority) to references; annotated HCA Income Standards PDFs with "(see institutional PNA table)"; documented the PNA-pegging formula in the description.
disabled_category/in_effect.yaml: reframed WSR 23-14-065 (emergency, eff. 2023-07-01 per HB 1128) as primary authority for the false → true flip; WSR 23-24-009 labeled as permanent successor (eff. 2023-12-28).
programs.yaml: WA SSP entry status changed from complete → partial; notes list modeled (2)(a)/(2)(c) tracks and unmodeled (2)(b) grandfathered MIL, (2)(f) DDA/PVL, (2)(g) BRS foster-child paths.

Documentation

wa_ssp.py: 7-line comment in formula explaining MEDICAL_INSTITUTION rate from 2023-07-01 = WA Apple Health institutional PNA per WAC 182-513-1105(5) − $30 federal SSI institutional PNA, with annual SSA COLA from 2024-01-01 per WAC 388-478-0057. Includes maintainer guidance to consult HCA Income Standards rather than mechanically COLA-adjust $70.
wa_ssp_payment_category.py: brief 3-line pointer above the MEDICAL_INSTITUTION enum value.

Tests (8 new cases)

edge_cases.yaml Cases 16/17: couple both in MED_INST; disabled in MED_INST post-2023-07-01.
wa_ssp.yaml: 2017 historical period; 2026 STANDARD rate.
wa_ssp_payment_category.yaml: aged 64 vs 65 boundary; living-arrangement enum coverage (codes A/B/C combined since indistinguishable through boolean-flag inputs, code D separate).

PR description correction

Updated body to use 2023-07-01 (WSR 23-14-065 emergency rule per HB 1128) as the disabled-category effective date instead of 2023-12-28 (which was the permanent rule's date). The benefit-amounts table now also lists the 2024/2025/2026 institutional-PNA-derived MED rates ($73.20 / $75.78 / $78.74) with HCA derivations. Three Verification TODO items moved to checked.

Verification

✅ 49/49 WA SSP tests pass (was 41).
✅ 231/231 broader WA tests pass.
✅ make format + ruff check clean.

Ready for re-review.

🤖 Generated with Claude Code

hua7450 and others added 3 commits April 25, 2026 19:00

Initialize WA SSP implementation

3bf0d2f

Closes PolicyEngine#1009 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Update WA SSP changelog fragment text

dd7a048

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

hua7450 and others added 5 commits April 25, 2026 20:13

fix

c8ffa78

hua7450 marked this pull request as ready for review April 26, 2026 21:21

remove lessons

451a08d

hua7450 requested a review from PavelMakarchuk April 27, 2026 19:05

hua7450 and others added 2 commits April 30, 2026 11:17

Merge branch 'main' into wa-ssp

e5d4cfe

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Add Washington State Supplementary Payment (SSP)#8157

Add Washington State Supplementary Payment (SSP)#8157
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Summary

Regulatory Authority

Program Overview

Eligibility

Benefit Amounts (WAC 388-478-0055)

Not Modeled (by design)

Files

Verification (resolved by /review-program)

Test plan

Requirements Coverage

Historical Notes

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Tests (8 new cases)

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Fixes Applied — `/review-program` follow-up