Medical Extraction Accuracy

How well Ross reads a medical record. Scored live against a hand-labeled corpus of 5 realistic records using the deterministic extractor — the grounded floor the whole medical feature stands on. No firm data, no model, nothing leaves this machine.

85.7%

Recall

6 of 7 known findings recovered — misses are the finding a client is never told about

100.0%

Grounding

every reported finding quotes the source verbatim — a hallucination is structurally impossible

42.9%

Precision

6 of 14 extractions matched a labeled finding — review the rest below

By encounter type — recall

Type	Recovered	Recall
er	1/1	100.0%
evaluation	0/1	0.0%
imaging	2/2	100.0%
medication	1/1	100.0%
surgery	1/1	100.0%
therapy	1/1	100.0%

Misses — labeled findings not recovered

Record	Type	Date	Expected
Follow-up evaluation	evaluation	2026-05-20	expected a finding containing “Follow-up evaluation”

Every extraction, with its source quote

Record	Type	Date	Source quote (verify)	Grounded	Match
Radiology report — lumbar MRI	imaging	2026-03-02	MRI of the lumbar spine performed on 2026-03-02 at Meridian Imaging.	grounded	labeled
Radiology report — lumbar MRI	visit	2026-03-02	Findings: L4-L5 disc herniation with left-sided nerve root impingement.	grounded	extra
Radiology report — lumbar MRI	visit	2026-03-02	Impression: acute lumbar radiculopathy.	grounded	extra
Operative note — knee surgery	surgery	2026-03-14	Operative report.	grounded	extra
Operative note — knee surgery	surgery	2026-03-14	On March 14, 2026, Dr. Alvarez performed an arthroscopic surgery on the right knee to repair a torn meniscus.	grounded	labeled
Operative note — knee surgery	procedure	2026-03-14	The patient tolerated the procedure well.	grounded	extra
Physical therapy progress note	therapy	2026-04-02	Physical therapy session on 4/2/2026 at Coastal Rehab.	grounded	labeled
Physical therapy progress note	medication	2026-04-02	Prescribed 600mg ibuprofen twice daily for pain management.	grounded	labeled
Emergency department record	er	2026-01-08	Emergency room visit on 2026-01-08.	grounded	labeled
Emergency department record	er	2026-01-08	The patient presented to the ER following a motor vehicle collision with neck and back pain.	grounded	extra
Emergency department record	imaging	2026-01-08	X-ray of the cervical spine was obtained.	grounded	labeled
Emergency department record	visit	2026-01-08	Diagnosis: cervical strain, ICD-10 S13.4.	grounded	extra
Follow-up evaluation	visit	2026-05-20	The patient reports improved range of motion.	grounded	extra
Follow-up evaluation	visit	2026-05-20	A work restriction of no lifting over 10 pounds was continued for six weeks.	grounded	extra

This scores the deterministic extractor (core/clinicalExtract.ts): pure rules, every finding carrying the exact sentence it came from. The model-assisted extractor only ever ADDS findings on top of this base and is itself grounded (each proposed finding must quote a verbatim span or it is dropped), so this page is the safety floor. Grounding below 100% would be a defect — it would mean a finding without a source. How the grounding check is built, and every other measure in the product.