OHDSI/Vocabulary-v5.0
Oct 2024 – Sep 2025
9 Months active
Languages Used
SQLPLpgSQLMarkdownPL/pgSQL
Technical Skills
Data AnalysisDatabase ManagementDatabase QueryingSQLSQL DevelopmentSQL Scripting
m-khitrun
PROFILE
M-khitrun
Maria Khitrun contributed to the OHDSI/Vocabulary-v5.0 repository, delivering robust data engineering solutions to enhance medical vocabulary quality, mapping accuracy, and analytics reliability. She developed and refactored SQL and PL/pgSQL pipelines for SNOMED, RxNorm, and DM+D vocabularies, focusing on data model improvements, relationship management, and multilingual mapping. Her work included implementing quality assurance tooling, optimizing ETL processes, and standardizing schema alignment to production environments. By integrating data cleaning, documentation, and XML parsing, Maria improved maintainability and onboarding for collaborators. Her engineering approach emphasized data integrity, reproducibility, and efficient release cycles, resulting in more reliable downstream analytics and governance.
Overall Statistics
Feature vs Bugs
95%Features
Repository Contributions
63Total
Bugs
1
Commits
63
Features
20
Lines of code
9,702
Activity Months9
Your Network
165 people
Work History
September 2025
6 Commits • 2 Features
Sep 1, 2025September 2025 performance summary for OHDSI Vocabulary v5.0 focused on strengthening vocabulary release QA through end-to-end coverage reporting, data-quality refinements, and robust relationship checks. Delivered tooling to report mapping coverage across releases, added polyhierarchy analysis, and refined data quality. Implemented RxNorm Concept Class Relationship Quality Assurance checks to surface improvements and regressions earlier. Performed key refactors to improve stability and performance, including switching the mapping coverage baseline to prodv5 and changing joins from concept_id to code+vocab. These workstreams collectively reduce release risk, shorten QA cycles, and improve data reliability for downstream analytics.
6 Commits • 2 Features
Sep 1, 2025September 2025 performance summary for OHDSI Vocabulary v5.0 focused on strengthening vocabulary release QA through end-to-end coverage reporting, data-quality refinements, and robust relationship checks. Delivered tooling to report mapping coverage across releases, added polyhierarchy analysis, and refined data quality. Implemented RxNorm Concept Class Relationship Quality Assurance checks to surface improvements and regressions earlier. Performed key refactors to improve stability and performance, including switching the mapping coverage baseline to prodv5 and changing joins from concept_id to code+vocab. These workstreams collectively reduce release risk, shorten QA cycles, and improve data reliability for downstream analytics.
September 2025
August 2025
4 Commits • 2 Features
Aug 1, 2025August 2025: Delivered two major features in OHDSI/Vocabulary-v5.0 that enhance vocabulary coverage and streamline the RxNorm Extension build, and refactored the DM+D data pipeline to improve loading, processing, and schema consistency. These efforts increase data quality, maintainability, and deployment velocity, enabling more reliable vocab updates and DM+D integration.
August 2025
4 Commits • 2 Features
Aug 1, 2025August 2025: Delivered two major features in OHDSI/Vocabulary-v5.0 that enhance vocabulary coverage and streamline the RxNorm Extension build, and refactored the DM+D data pipeline to improve loading, processing, and schema consistency. These efforts increase data quality, maintainability, and deployment velocity, enabling more reliable vocab updates and DM+D integration.
July 2025
5 Commits • 3 Features
Jul 1, 2025July 2025 Monthly Summary – OHDSI/Vocabulary-v5.0 Key features delivered: - RxNorm Loading Script Refactor and Documentation: Refactored the RxNorm loading pipeline, clarified comments, updated the README, renamed IDs, and adjusted operation order to improve clarity, maintainability, and onboarding for new engineers. - Vocabulary Domain Classification and Hierarchy Propagation Improvements: Strengthened vocabulary structure by improving domain classifications, propagating hierarchy mappings to RxNorm, and introducing a new G-code related procedure classification with refined VT concept classifications. - Production Schema Alignment and Version-Comparison Tooling: Updated manual checks to reference the production schema (prodv5) instead of devv5 and added tooling for RxNorm version comparison, enhancing production reliability and providing clear analysis paths for version differences. Overall impact and accomplishments: - Improved data loading reliability, maintainability, and clarity for RxNorm ingestion. - More accurate and robust vocabulary structure, enabling better downstream analytics and data governance. - Increased production reliability and observability through production-aligned checks and version-difference tooling, reducing drift between environments. Technologies/skills demonstrated: - Python-based data loading, refactoring, and documentation practices. - Domain modeling, taxonomy/hierarchy propagation, and new classification work (G-code procedure grouping). - Production-facing tooling, version comparison, and production schema governance. Business value: - Faster onboarding for new contributors, reduced maintenance costs, fewer production incidents, and more reliable downstream analytics due to stronger schema alignment and clearer data provenance.
5 Commits • 3 Features
Jul 1, 2025July 2025 Monthly Summary – OHDSI/Vocabulary-v5.0 Key features delivered: - RxNorm Loading Script Refactor and Documentation: Refactored the RxNorm loading pipeline, clarified comments, updated the README, renamed IDs, and adjusted operation order to improve clarity, maintainability, and onboarding for new engineers. - Vocabulary Domain Classification and Hierarchy Propagation Improvements: Strengthened vocabulary structure by improving domain classifications, propagating hierarchy mappings to RxNorm, and introducing a new G-code related procedure classification with refined VT concept classifications. - Production Schema Alignment and Version-Comparison Tooling: Updated manual checks to reference the production schema (prodv5) instead of devv5 and added tooling for RxNorm version comparison, enhancing production reliability and providing clear analysis paths for version differences. Overall impact and accomplishments: - Improved data loading reliability, maintainability, and clarity for RxNorm ingestion. - More accurate and robust vocabulary structure, enabling better downstream analytics and data governance. - Increased production reliability and observability through production-aligned checks and version-difference tooling, reducing drift between environments. Technologies/skills demonstrated: - Python-based data loading, refactoring, and documentation practices. - Domain modeling, taxonomy/hierarchy propagation, and new classification work (G-code procedure grouping). - Production-facing tooling, version comparison, and production schema governance. Business value: - Faster onboarding for new contributors, reduced maintenance costs, fewer production incidents, and more reliable downstream analytics due to stronger schema alignment and clearer data provenance.
July 2025
May 2025
6 Commits • 3 Features
May 1, 2025May 2025 (OHDSI/Vocabulary-v5.0) delivered substantial feature refinements and vocabulary management improvements that enhance data quality, mapping accuracy, and downstream analytics. The work focused on HCPCS domain mappings, SNOMED loading/mapping enhancements, and NUCC vocabulary load/cleanup, with QA readiness and maintainability improvements across mapping scripts and docs.
May 2025
6 Commits • 3 Features
May 1, 2025May 2025 (OHDSI/Vocabulary-v5.0) delivered substantial feature refinements and vocabulary management improvements that enhance data quality, mapping accuracy, and downstream analytics. The work focused on HCPCS domain mappings, SNOMED loading/mapping enhancements, and NUCC vocabulary load/cleanup, with QA readiness and maintainability improvements across mapping scripts and docs.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025 (OHDSI/Vocabulary-v5.0) focused on SNOMED vocabulary data quality and loading enhancements. Delivered improvements to concept relationship management, including deprecation of obsolete replacement relationships; added mappings for clinical drug forms to ingredients; refactored and extended SNOMED data loading to incorporate new concepts and relationships; and cleaned up temporary structures to improve accuracy and completeness of the vocabulary. These changes create more reliable vocabulary for downstream analytics and improve maintainability of the loading pipeline.
2 Commits • 1 Features
Apr 1, 2025April 2025 (OHDSI/Vocabulary-v5.0) focused on SNOMED vocabulary data quality and loading enhancements. Delivered improvements to concept relationship management, including deprecation of obsolete replacement relationships; added mappings for clinical drug forms to ingredients; refactored and extended SNOMED data loading to incorporate new concepts and relationships; and cleaned up temporary structures to improve accuracy and completeness of the vocabulary. These changes create more reliable vocabulary for downstream analytics and improve maintainability of the loading pipeline.
April 2025
January 2025
19 Commits • 3 Features
Jan 1, 2025January 2025 (OHDSI/Vocabulary-v5.0): Delivered major vocabulary data model and mapping enhancements, improving data integrity and maintainability. Implementations include preventing hierarchy loops in SNOMED/Veterinary schemas, introducing new relationships (Dose Form to Route, Has associated visit OMOP), refining ICD10PCS mappings, and enhancing manual concept processing across mappings. Documentation improvements and SQL/metadata cleanup were completed to strengthen reproducibility, governance, and onboarding for downstream analytics (e.g., HemOnc workflows). These changes enable more reliable data ingestion, improved data quality, and faster collaborator turnaround across the vocabulary initiative.
January 2025
19 Commits • 3 Features
Jan 1, 2025January 2025 (OHDSI/Vocabulary-v5.0): Delivered major vocabulary data model and mapping enhancements, improving data integrity and maintainability. Implementations include preventing hierarchy loops in SNOMED/Veterinary schemas, introducing new relationships (Dose Form to Route, Has associated visit OMOP), refining ICD10PCS mappings, and enhancing manual concept processing across mappings. Documentation improvements and SQL/metadata cleanup were completed to strengthen reproducibility, governance, and onboarding for downstream analytics (e.g., HemOnc workflows). These changes enable more reliable data ingestion, improved data quality, and faster collaborator turnaround across the vocabulary initiative.
December 2024
8 Commits • 3 Features
Dec 1, 2024Monthly summary for 2024-12 focusing on OHDSI/Vocabulary-v5.0 contributions and business value. Delivered data quality improvements, vocabulary unit accuracy, and repository maintainability enhancements that enable reliable analytics and faster development cycles.
8 Commits • 3 Features
Dec 1, 2024Monthly summary for 2024-12 focusing on OHDSI/Vocabulary-v5.0 contributions and business value. Delivered data quality improvements, vocabulary unit accuracy, and repository maintainability enhancements that enable reliable analytics and faster development cycles.
December 2024
November 2024
10 Commits • 2 Features
Nov 1, 20242024-11: Focused on improving vocabulary quality and auditability for OHDSI/Vocabulary-v5.0. Key features: (1) Vocabulary enrichment and multilingual mapping enhancements (including Spanish synonyms, domain mappings, and change-traceability); (2) Mapping checks tooling and traceability improvements (refactored validation, clearer mapping_changes, simplified similarity calculations). No major bugs reported; stability preserved via targeted refactors. Business impact: higher data quality in the OMOP vocabulary, stronger governance of vocabulary updates, and broader multilingual analytics. Technologies demonstrated: multilingual vocabulary loading, dynamic validation tooling, and maintainability-focused refactors.
November 2024
10 Commits • 2 Features
Nov 1, 20242024-11: Focused on improving vocabulary quality and auditability for OHDSI/Vocabulary-v5.0. Key features: (1) Vocabulary enrichment and multilingual mapping enhancements (including Spanish synonyms, domain mappings, and change-traceability); (2) Mapping checks tooling and traceability improvements (refactored validation, clearer mapping_changes, simplified similarity calculations). No major bugs reported; stability preserved via targeted refactors. Business impact: higher data quality in the OMOP vocabulary, stronger governance of vocabulary updates, and broader multilingual analytics. Technologies demonstrated: multilingual vocabulary loading, dynamic validation tooling, and maintainability-focused refactors.
October 2024
3 Commits • 1 Features
Oct 1, 2024Month: 2024-10 — OHDSI/Vocabulary-v5.0 delivered focused data quality improvements and SNOMED taxonomy enhancements to strengthen analytics reliability and data completeness. The work supports more accurate discrepancy analysis, robust domain filtering, and updated terminology for medical observations and conditions, enabling better downstream insights and governance.
3 Commits • 1 Features
Oct 1, 2024Month: 2024-10 — OHDSI/Vocabulary-v5.0 delivered focused data quality improvements and SNOMED taxonomy enhancements to strengthen analytics reliability and data completeness. The work supports more accurate discrepancy analysis, robust domain filtering, and updated terminology for medical observations and conditions, enabling better downstream insights and governance.
October 2024
Activity
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Quality Metrics
Correctness87.4%
Maintainability87.2%
Architecture83.0%
Performance78.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
MarkdownPL/pgSQLPLpgSQLSQL
Technical Skills
Data AnalysisData CleaningData EngineeringData ManagementData MappingData ModelingData ProcessingData Quality AssuranceDatabaseDatabase AnalysisDatabase DevelopmentDatabase ManagementDatabase QueryingDocumentationETL
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