Alabama Medicaid ex parte renewal share, August 2026

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 56.0 (02/26); mean monthly change over trailing window 0.34pp; damped six-month projection = 57.1.

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.

The resolver is a state row, not a national weighted average: Alabama's original first-publication August 2026 reporting-period row in the CMS eligibility processing dataset. The target is the share of completed renewals processed ex parte, reported in percent and rounded to one decimal.

Base-rate/reference class: the most relevant outside view is Alabama's own post-unwinding original first-print observations from July 2025 through February 2026, centered around 55.2 percent across the five inspected points and with a latest inspected value of 56.0 percent. I use Alabama persistence rather than a national average because this resolves one state row.

Level, momentum, and mechanism: the level is mid-to-high 50s; momentum from July 2025 to January 2026 was positive but February slipped to 56.0; one-off monthly cohort composition can move both completed-renewal and ex parte counts; the policy mechanism is continued CMS pressure for ex parte renewals but no known Alabama-specific automation shock in the checked context.

Prior/update/interval: prior model is latest-value persistence with a damped local trend, using the observed official-source-derived inspected sample for 2025-07, 2025-09, 2025-11, 2026-01, and 2026-02. The update adds +1.0 pp for the 2025-to-early-2026 improvement signal and +0.1 pp for CMS compliance pressure, partly offset by the February dip, moving 56.0 to 57.1. The 80% interval uses realized first-print swings in this Alabama sample, then widens for cohort mix and missing-month uncertainty.

Counter-consideration: upside outside the interval would require a sustained automation or data-match improvement pushing Alabama above roughly 62 percent. Downside outside the interval would require a manual-heavy renewal cohort, data-source outage, or operational regression pushing the share below roughly 52 percent. A schedule counter-consideration is that CMS publishes this series monthly but I did not verify a CMS page explicitly naming 2026-12-15 for the August 2026 first print.

Observed changes in the inspected Alabama sample were +2.5, +1.7, +2.5, and -2.3 pp, with mean absolute change about 2.25 pp and max absolute change 2.5 pp. Point calculation: latest 56.0 plus damped trend and operational-compliance adjustment of +1.1 pp equals 57.1 percent. Interval calculation: widen the observed 2.25 pp typical move by about 2.3 times for the longer August horizon, missing months, and renewal-cohort mix, giving lower half-width 5.2 pp and upper half-width 5.1 pp, or 51.9 to 62.2 after rounding.

Review disposition: accepted the reviewer suggestions to remove the same-day correction carveout from the resolution rule and to clarify that the Alabama history is five inspected first-print observations, not a complete monthly July 2025-February 2026 panel.