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Epic EHR CDA XML
Parses, extracts, validates, and cross-references data from Epic EHR CDA/XML exports and HL7 CDA R2 records. Use when Codex needs to inspect an Epic XML export, query HL7 v3 nodes with the `urn:hl7-org:v3` namespace, extract note text, author and date attribution, medications, lab results, referrals, or order-related nodes, batch-process multi-file or 82-document CDA exports, detect timeline or copy-forward anomalies, or map XML findings into exhibit, DX-series, or C-number tables.