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The LSAH SNOMED CT Coding Tool

The LSAH SNOMED CT Coding Tool. Seth P. Rodriguez NASA / Wyle Laboratories Johnson Space Center Space Life Sciences Directorate Space Medicine Division Medical Informatics and Health Care Systems Office October 2006. The Longitudinal Study of Astronaut Health (LSAH)

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The LSAH SNOMED CT Coding Tool

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  1. The LSAH SNOMED CT Coding Tool Seth P. RodriguezNASA / Wyle LaboratoriesJohnson Space CenterSpace Life Sciences DirectorateSpace Medicine DivisionMedical Informatics and Health Care Systems OfficeOctober 2006

  2. The Longitudinal Study of Astronaut Health (LSAH) In 1992, NASA initiated the long term investigation of morbidity and mortality associated with space flight Protocol developed based on epidemiological research principles

  3. LSAH’s Data Problem • 357 Astronauts and 982 comparison subjects with up to 47 years of data on each • Most data is stored electronically, but in many various formats • Needed a mechanism to record and code all relevant, discrete medical events in SNOMED CT

  4. LSAH Participant Summary • Software that implements our context-rich information model • LSAH SNOMED CT Coding Tool • Software that enables our medical coders to easily and accurately encode medical data entered in the Participant Summary

  5. Coding Tool key design points: • Eliminate unneeded portions of SNOMED CT • Control context in the information model • Enforce strict rules for coding and post-coordination • Provide users with advanced research tools • Store codes in a hierarchical fashion

  6. Eliminate unneeded portions of SNOMED Why? Reduce complexity Improve accuracy when coding How? Remove non-human concepts Use only portions of SNOMED that are useful to the project’s research

  7. 2. Control context in the information model Why? Reduce complexity involved in trying to capture context within SNOMED How? Design a custom context-rich information model to gather all relevant, discrete medical events for study participants

  8. LSAH’s Information Model * * A diagnosis can be noted as being Confirmed, Possible or Ruled out

  9. 3. Enforce strict rules for coding and post-coordination Why? Improve accuracy of coding Improve accuracy of retrieval How? Use rules engine that uses a customizable rule set

  10. 4. Provide users with advanced research tools Why? Improve accuracy of coding Improve efficiency How? Provide advanced search options Provide full details for concepts Provide various hierarchical views

  11. 5. Store codes in a hierarchical fashion Why? So the concept’s original meaning as it was coded can be recreated How? Store data in attribute/value pairs along with the parent/child relationships between each pair

  12. Questions & Demonstration

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