# Claims Matrix

> A claims matrix is the controlled inventory of approved product claims paired with their substantiating evidence — the source of truth for what a pharma company may say and what backs each statement.

> A **claims matrix** is the controlled inventory of statements a pharmaceutical company is permitted to make about a product, with each claim paired to its approved supporting evidence. A complete row carries the verbatim approved wording, the claim type, the substantiating reference(s) with page/column/paragraph locators, approval status and history, and any required safety pairing (fair balance/ISI in the US).

The matrix is upstream of everything: writers draw approved language from it, reviewers verify against it, and [annotated references](/glossary/annotated-references/) in deliverables are ultimately lookups into it. Closely related terms: [claims library](/glossary/claims-library/) (often the same artifact, database-flavored), *core claims document* (frequently the launch-time master), and UK usage keeps "claims matrix" as-is.

Most matrices live in spreadsheets, and their failure modes are structural: no tracking of *where* claims are used, no propagation when a claim is revised or retired, no drift detection when deliverable text diverges from approved wording. See [How to Build a Claims Matrix](/resources/how-to-build-a-claims-matrix/) for a working structure and the point at which a spreadsheet stops being enough.

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Source: https://medcom.claims/glossary/claims-matrix/ · Updated 2026-07-13 · © Mantir, Inc.