When community-engagement redeterminations begin under H.R.1, the quality of your underlying data will decide how many eligible members keep their coverage. Outreach campaigns and exemption tools sit on top of records; if those records are wrong, the most polished notice in the world goes to a dead address. The work that prevents the next Arkansas, where roughly 18,000 people lost coverage largely from reporting and notification gaps, happens in the data layer months before anyone presses send.
Three data assets to get right first
Start with contact data hygiene. Audit what share of your subject population has a verified, current phone, email, and mailing address. Run records against change-of-address and other update sources, and stand up a continuous process to capture corrections, not a one-time cleanup. Contact data decays constantly, and stale addresses are the single largest hidden cause of procedural loss.
Next, the exemption-relevant data inventory. For each exemption category your state recognizes, identify which data field would establish it and whether you actually hold that field for each member. You may have reliable pregnancy or disability indicators but nothing on caregiving status or treatment enrollment. Mapping these gaps now tells you which members the rules engine will mark indeterminate, and therefore where you must collect data or plan targeted outreach before the window opens.
Third, a clean reason-code taxonomy. Decide before go-live how every disenrollment will be classified as procedural or substantive, with subcategories granular enough to act on: undelivered notice, attestation not completed, exemption indeterminate, genuinely ineligible. Without this taxonomy your dashboards cannot distinguish a process failure from a correct outcome, and you will be flying blind exactly when stakes are highest.
Build the baseline before the window
You also need a baseline measured before the first notices go out so you can prove later what your interventions changed. Capture current contactability, current data-completeness by exemption category, and current language distribution. These numbers become the reference point for every ROI and effectiveness claim you make afterward.
The first notice window runs June 30 to August 31, 2026, with enforcement following on January 1, 2027. That sequence is a gift: it gives you a defined runway to fix data before consequences attach. Treat the months beforehand as a data-readiness sprint, not a communications sprint. Outreach can only reach members your data can find, and exemptions can only protect members your data can identify. Everything downstream depends on getting this layer right first.