LLM Based Vision & OCR for Healthcare Data Extraction | Tech Mahindra

Abstract

Healthcare depends heavily on data, much of which remains “invisible” to computers—including handwritten notes, scanned records, and complex medical images. Traditional OCR struggles to interpret this unstructured information. The whitepaper examines the limitations of legacy OCR and explains why LLM-based vision architectures are becoming essential for clinical data extraction. Drawing on industry research and academic evidence rather than anecdotes, it outlines how clinical documents can be converted into actionable insights, context-aware insights.

Advance Modal Components
Revolutionizing Clinical Decision-Making with Tech Mahindra’s LLM-based Vision and OCR Platform

Key Insights

Knowledge Extraction is a Clinical Risk Factor

Traditional OCR fails to capture clinical context from handwritten notes, medical images, and complex layouts, increasing extraction errors and downstream clinical risk.

Multimodal Understanding Outperforms Text Only OCR

LLM based vision models process text and images together, enabling more accurate interpretation of spatial layouts, annotations, and clinical markers.

Manual Validation Does Not Scale

Legacy OCR systems rely heavily on human verification, creating workflow friction, productivity loss, and operational bottlenecks as data volumes increase.

Contextual AI Improves Diagnostic Accuracy

By applying language reasoning to visual data, LLM‑based OCR reduces the misinterpretation of medical terminology, abbreviations, and structured clinical expressions.

Localized Deployment Enables Compliance

Running vision‑language models within enterprise‑controlled environments ensures data residency, auditability, and regulatory alignment for sensitive healthcare data.

Standards Based Architectures Enable Enterprise Scale

Integration through agent based and interoperability standards allows extracted data to flow seamlessly into clinical systems and AI workflows.

About the Author
Srinivas Madhusudhan R
Principal Solution Architect – Large Deals, Tech Mahindra

Srinivas is a seasoned technology and architecture leader with over 26 years of experience in enterprise and solution architecture, product and application design, and delivery of mission-critical initiatives. He brings deep cross-functional expertise across pre-sales, development, implementation, and transformation, spanning strategy, sales, operations, and delivery.