Zero-Hallucination Clinical Note Synthesis & Multi-EHR Q&A for an Assisted Care Network
Connecting disparate patient history records, physician consultation notes, and lab reports into a HIPAA-compliant assistive search engine.
Patient intake chart review time dropped from 42 mins to under 8 mins
Every synthesized summary item links directly to page/paragraph source PDFs
100% private cloud VPC deployment with automated PHI redaction at edge
The Bottleneck
The Operational Challenge
Clinicians were drowning in cognitive load, manually scrolling through hundreds of pages of scanned PDF specialist notes and EHR exports to piece together patient chronic histories.
Standard AI and off-the-shelf LLMs presented severe legal and medical risks due to medical term hallucination, lack of verifiable source attribution, and public data retention.
Integration barriers: the hospital group utilized two legacy on-premise EHR installations that did not offer modern REST APIs.
The Engineering Fix
The Sodiac Architecture
Deployed Sodiac Andromeda within the provider’s private, HIPAA-certified AWS GovCloud VPC with signed Business Associate Agreements (BAAs).
Engineered an edge de-identification gateway that sanitizes all 18 HIPAA Safe Harbor identifiers before text chunking and vector indexing.
Built a clinical RAG retrieval engine with hybrid BM25 lexical search and BioLinkBERT medical embeddings, maintaining sentence-level provenance pointers.
Enforced an assistive-only doctor UX: AI outputs are clearly demarcated as clinical summaries and require physician sign-off before entering formal records.
System Architecture
4-Step Technical Execution Pipeline
How data, deterministic business logic, and responsible AI guardrails execute in production.
FHIR & PDF Medical Record Ingestion
Extracts lab results, prescription logs, and physician discharge summaries from HL7/FHIR feeds and scanned historical records.
Automated PHI Scrubbing & Anonymization
Redacts patient names, SSNs, phone numbers, and addresses at the ingestion boundary with zero persistence of raw identifiers in vector storage.
Clinical Hybrid Search & Reranking
Retrieves relevant clinical history chunks using specialized medical terminology ontologies (SNOMED-CT, RxNorm, ICD-10).
Grounded Synthesis with Deep Citations
Surfaces chronological medical timelines with one-click interactive links to original source charts for instant clinician verification.
“Sodiac Andromeda changed how our doctors work. Having an instant, verifiable chronological timeline of a complex patient’s entire multi-year medical journey with clickable source citations is nothing short of revolutionary for patient safety.”
Quantified Impact
Verified Production Outcomes
Audited 90-day operational impact after migrating to the Sodiac platform.
Physician chart prep time reduced by 81%, giving clinicians an extra 1.5 hours per day for direct patient care.
Zero reported hallucinations over a 6-month clinical validation trial across 14,000 patient reviews.
Successfully passed independent 3rd-party HIPAA security and SOC 2 Type II compliance audits with zero findings.
Clinician adoption rate reached 94% across all 32 healthcare facilities within 60 days of rollout.
Technology stack & proprietary products
Products Deployed
Underlying Technologies
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