Kansas 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 58.3 (02/26); mean monthly change over trailing window -0.62pp; damped six-month projection = 56.4.

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 Kansas's 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 the share of completed Medicaid renewals processed ex parte, in percent rounded to one decimal.

Base-rate/reference class: the most relevant outside view is Kansas's own recent original-submission CMS eligibility-processing run. It centers near 60 percent, with a late-2025 peak of 68.3 percent and a latest inspected value of 58.3 percent after two declines.

Level, momentum, and mechanism: Kansas improved sharply from July to November 2025, then gave back part of the gain in January and February 2026. I treat the latest decline as informative because ex parte performance is operational and cohort-sensitive, but I do not extrapolate a collapse because the latest level remains above the July 2025 low and CMS compliance pressure favors continued automation.

Prior/update/interval: prior model is latest-value persistence blended with Kansas's five-point first-print mean and a damped negative local trend, using the observed sample 2025-07, 2025-09, 2025-11, 2026-01, and 2026-02. Starting from latest 58.3, I subtract 1.5 pp for the recent two-print downtrend and 0.4 pp for renewal-cohort volatility, with no additional policy lift beyond persistence, giving 56.4. The 80% interval uses realized Kansas first-print dispersion: an 18.6 pp range and 7.2 pp mean absolute adjacent move, widened over the six-month horizon to asymmetric bounds of 46.8 to 67.2.

Counter-consideration: the forecast could be too low if Kansas's late-2025 improvement reflects a durable data-match or eligibility-system release and the February drop was a cohort effect; it could be too high if the state continues moving away from the November peak or has an August cohort with unusually low automatic-match rates.

Historical mean = (49.7 + 62.3 + 68.3 + 62.9 + 58.3) / 5 = 60.3 percent. Recent adjacent changes were +12.6, +6.0, -5.4, and -4.6 pp. Point calculation: latest 58.3 - 1.5 pp downtrend adjustment - 0.4 pp cohort-volatility adjustment = 56.4. Interval calculation: center 56.4, lower half-width 9.6 pp and upper half-width 10.8 pp from observed Kansas dispersion and remaining-month uncertainty, yielding 46.8 to 67.2 after rounding.

Resolution-date note: the official CMS page checked this run verifies the monthly data.Medicaid.gov release vehicle and current June 26, 2026 update status, but I did not find a separate future-dated CMS placeholder for the exact August 2026 Kansas row. I keep the forecast tied to the canonical ledger date of 2026-12-15 and bind resolution to the first official CMS dataset print.

Outside-the-interval scenarios: above 67.2 would likely require the November 2025 peak to resume through a durable automation or data-match improvement; below 46.8 would likely require a data-source outage, eligibility-system issue, reporting break, or an unusually manual-heavy August renewal cohort.