An open-source LLM accurately assigns CPT codes from interventional radiology postprocedure reports in a proof-of-concept study.
Key Details
- 1Researchers fine-tuned the XLNet model using over 7,000 IR postprocedure reports from the MIMIC-IV dataset.
- 2On an embolization dataset (n=1,590; 17 CPT codes), XLNet achieved AUROC 0.93, AUPRC 0.86, F1 score 0.84.
- 3On an embolization+catheter dataset (n=5,590; 42 CPT codes), AUROC reached 0.99, AUPRC 0.86, F1 score 0.85.
- 4Best performance seen for codes like 37243 and 36597, with some codes (e.g., 36246, 36010) more challenging.
- 5The study suggests LLMs could reduce billing inefficiencies, noting current manual coding takes 12 minutes per procedure and up to 80% of bills contain errors.
- 6Authors recommend stepwise deployment before fully autonomous use, starting with human confirmation.
Why It Matters

Source
AuntMinnie
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