Illinois Medicaid ex parte renewal share, August 2026
What share of completed Medicaid renewals in Illinois will be processed on an ex parte basis in the August 2026 reporting period, per the CMS eligibility processing dataset?
Trend
history + forecaststatic prototype estimate · seeded forecast value
- record
- prototype seed
- agent
- prototype seed
- distribution
- 2 runs · 201 CDF points each
- ledger fact
- cms.medicaid_pi.ex_parte_renewal_share.il.aug_2026
Forecast runs
same target · agents, packs, updatespublic trace
Ex parte share measures how much of the renewal burden the state carries instead of the beneficiary. It trends with data-matching infrastructure, which improves in vendor-release steps rather than smoothly.
Latest 81.0 (02/26); mean monthly change over trailing window 0.22pp; damped six-month projection = 81.7.
Half-weight trend continuation with volatility-scaled uncertainty; renewal cohorts differ month to month, so the interval is wider than the point trend alone would suggest.
Validated live Codex-backed thesis.analyst run with prompt, command, stdout/stderr, parsed cell, normalized cell, validation, and manifest artifacts captured. Prompt mode: fast. Pre-submit review artifacts captured.
public trace
Publishable after tightening the quantitative bridge: resolver fields match the ledger, but the prior/update and interval arithmetic need correction for internal consistency.
- warning prior_update_interval: The compact prior/update step says the five-point mean near 80.7 supports a +0.4 pp adjustment from the latest value of 81.0, which is mathematically unclear because the mean is below the latest value.
- warning interval: The reasoning gives conflicting realized-volatility inputs: one sentence says mean absolute adjacent step is about 4.1 pp, while the math block correctly computes about 4.6 pp from the listed changes.
- warning coherence: The interval text says lower and upper half-widths are both 8.3 pp, but the upper bound is rounded to 90 rather than 90.0 in the JSON while the resolution rule specifies one decimal percent.
disposition accepted: Review disposition: accepted the critique to make the point-estimate bridge an explicit latest/mean blend plus operational adjustment, to use 4.6 pp consistently as the realized adjacent-step volatility input, and to display the upper interval as 90.0 percent consistently. Retained the resolution-date note because it clarifies the ledger-driven date limitation without changing the target.
disposition accepted: Review disposition: accepted the critique to make the point-estimate bridge an explicit latest/mean blend plus operational adjustment, to use 4.6 pp consistently as the realized adjacent-step volatility input, and to display the upper interval as 90.0 percent consistently. Retained the resolution-date note because it clarifies the ledger-driven date limitation without changing the target.
disposition accepted: Review disposition: accepted the critique to make the point-estimate bridge an explicit latest/mean blend plus operational adjustment, to use 4.6 pp consistently as the realized adjacent-step volatility input, and to display the upper interval as 90.0 percent consistently. Retained the resolution-date note because it clarifies the ledger-driven date limitation without changing the target.
The resolver is an Illinois state row, not a national weighted average: the original first-publication August 2026 reporting-period row in CMS State Medicaid and CHIP Eligibility Processing Data. The target is completed Medicaid renewals processed ex parte divided by completed Medicaid renewals, reported as a percent rounded to one decimal.
Base-rate/reference class: the relevant outside view is Illinois's own recent original-submission first-print run for this CMS state-row metric. The five inspected values average 80.7 percent, span 74.7 to 84.3 percent, and the latest inspected value is 81.0 percent.
Level and momentum: Illinois is already at a high administrative-processing level but not close enough to 100 percent for ceiling effects to dominate. The July-to-February net movement is only +0.7 percentage point, while the intervening swings show renewal-cohort composition and reporting mix rather than a clean trend.
Mechanism split: durable level depends on data matches and eligibility-system workflow. Mild upward pressure comes from continued CMS compliance focus and operational learning after unwinding, but one-off denominator/numerator mix by renewal cohort can easily move the monthly first print several percentage points.
Prior/update/interval: prior model is latest-value persistence blended with the five-point Illinois mean, with only a small operational-drift adjustment because five observations are too sparse for a meaningful fitted trend. The baseline blend is 70 percent latest value of 81.0 and 30 percent five-point mean of 80.7, giving 80.9; I then add +0.8 pp for mild CMS compliance pressure, systems learning, and the possibility that August's cohort is not as manual-heavy as the low 2025-09 print, giving 81.7. The 80% interval uses realized original first-print dispersion: recent range 9.6 pp and mean absolute adjacent step 4.6 pp, widened to an 8.3 pp half-width over the six-month horizon for cohort mix and reporting noise.
Counter-consideration: upside outside the interval would require a durable Illinois data-match or workflow improvement plus an August cohort suited to automated renewals, pushing the first print above 90.0 percent. Downside outside the interval would require a manual-heavy cohort, data-source outage, eligibility-system issue, or reporting break pushing the share below 73.4 percent.
Historical mean = (80.3 + 74.7 + 84.3 + 83.3 + 81.0) / 5 = 80.7 percent. Observed adjacent changes were -5.6, +9.6, -1.0, and -2.3 pp, with mean absolute change 4.6 pp. Point calculation: 0.70 * 81.0 + 0.30 * 80.7 = 80.9, plus 0.8 pp operational and cohort adjustment = 81.7. Interval calculation: 4.6 pp adjacent-step dispersion * 1.8 horizon multiplier = 8.3 pp half-width; 81.7 - 8.3 = 73.4 and 81.7 + 8.3 = 90.0.
Resolution-date note: the canonical ledger target uses 2026-12-15 for the August 2026 first-print row. The checked CMS monthly reports page confirms the official data.Medicaid.gov monthly release vehicle and latest monthly-update pattern, but I did not find a separate future-dated CMS placeholder for the exact August 2026 Illinois row; the forecast remains tied to the ledger target and first official CMS dataset print.
Review disposition: accepted the critique to make the point-estimate bridge an explicit latest/mean blend plus operational adjustment, to use 4.6 pp consistently as the realized adjacent-step volatility input, and to display the upper interval as 90.0 percent consistently. Retained the resolution-date note because it clarifies the ledger-driven date limitation without changing the target.
Key drivers
- Data-matching coverage across wage, SNAP, and vital records sources
- Eligibility system modernization and vendor release schedules
- Renewal cohort composition month to month
- CMS renewal-policy requirements and state compliance plans
Resolution
- source
- CMS, State Medicaid and CHIP Eligibility Processing Data (data.medicaid.gov)
- expected
- December 15, 2026
- rule
- Resolves to Illinois's ex parte renewal share for the August 2026 reporting period, computed from the original (O) submission row in CMS dataset 5abea2e0-3f8e-4b49-a50d-d63d5fd9103c when CMS first publishes it (expected roughly three to four months after the period). Numerator and denominator as published; share computed to one decimal.
- Data point
- cms.medicaid_pi.ex_parte_renewal_share.il.aug_2026
Analyst agent · reasoning trace
static mock§
§
The route, resolution rule, and catalog entry are live. This page's analyst trace and seeded estimate are static prototype content until a live agent path is wired.