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Everything for reading your aberrancy report
Guides, tools, and plain-English articles that help independent pharmacies monitor their Caremark aberrancy position, understand a PrimeRx claims report, and see the room they have left before the 25% line.
Start here · Pillar guideThe independent pharmacy guide to the 25% aberrancy line
A plain-English guide for independent pharmacies to the Caremark 25% aberrancy line: what it measures, the dollar and claim-count tests, aberrant NDCs, effective rate, and room remaining.
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All articles →What Is the Caremark 25% Aberrancy Line?
Last reviewed 2026-08-07
What the 25% aberrancy line describes, the two tests behind it, and how to read your own report against it.
Read articleHow to Calculate a Pharmacy's Effective Aberrancy Rate
Last reviewed 2026-08-07
The exact steps to compute your effective aberrancy rate from a claims export, with a worked example.
Read articleWhat Is an Aberrant NDC?
Last reviewed 2026-08-07
What an aberrant NDC is, and how NDC matching works when reviewing a report.
Read articleHow to Read a PrimeRx Claims Report
Last reviewed 2026-08-07
The columns that matter in a PrimeRx export and how to turn it into an aberrancy read.
Read articleDollar-Based vs Claim-Count Aberrancy
Last reviewed 2026-08-07
How the dollar and claim-count tests differ, and why watching both matters.
Read articleWhat “Room Remaining” Means for a Pharmacy
Last reviewed 2026-08-07
What the room-remaining calculation is, how it is derived, and how to interpret it safely.
Read articleEstimate your report's position against the 25% reference line
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