THE RULEBOOK
Your rating runs on hundreds of pages that change every year. Reading them is our job.
Below is the actual stack of CMS and PQA documents that governs Part D Star Ratings. Plans that manage it by hand staff committees, hire consultants, and still find out in October what the year really looked like. Plans on AdherenceStar upload two files and see where they stand the same day — because the rulebook is already encoded, versioned, and watched.
PAGE LAST REVIEWED: AUGUST 4, 2026 · SOURCES MONITORED WEEKLY01Star Ratings Technical NotesEvery measure specification, weight, cut point, and roll-up rule — the methodology behind your rating, republished each October and revised mid-cycle when CMS sees fit.With AdherenceStar: Encoded as a versioned rulepack. When October’s edition drops, your projections update as a content release — not a months-long interpretation project.PUBLISHED EACH OCTOBER · INTERIM UPDATES AS NEEDEDOfficial source ↗
02Star Ratings Fact SheetThe annual summary of how every contract in the country fared: rating distributions, averages, year-over-year movement.With AdherenceStar: Your contract is placed in that national field automatically — you see the gap to the bonus line as a number of members, not a paragraph in a PDF.PUBLISHED EACH OCTOBEROfficial source ↗
03PQA adherence measure specificationsThe qualification windows, exclusion logic, and day-counting rules behind the triple-weighted adherence measures. Getting one detail wrong quietly skews every rate you report.With AdherenceStar: Computed member-by-member exactly to specification, verified by golden tests — and reconciled against your official report so you can trust the number before acting on it.MEASURE MANUALS UPDATED ANNUALLYOfficial source ↗
04Rate Announcements and rulemakingWhere the future arrives: measure retirements, weight changes, and new requirements — decided as much as two years before they touch your rating.With AdherenceStar: Tracked ahead of effect. Upcoming changes appear in your what-if scenarios before they appear in your rating, so next year’s surprise is this year’s plan.ADVANCE NOTICE EACH WINTER · RATE ANNOUNCEMENT EACH APRILOfficial source ↗
THE WHOLE ARRANGEMENT
Complexity on our side of the table. Answers on yours.
You provideTwo files — enrollment and pharmacy claims. No integration project, no data engineers.
We computeEvery pharmacy measure to the exact specification for that measurement year, same day.
You seeYour projected stars, and the members whose adherence you can still recover — ranked by what each is worth.
We keep watchThese pages are monitored automatically every week. When CMS posts, we read it. You get the change as an update.
Let the rulebook be our problem.
See your own contract computed against the current rules — same day, two files.