Daniel J. Vreeman, PT, DPT, MScAssociate Research Professor, Indiana University School of Medicine

Associate Director for Terminology Services, Regenstrief Institute, Inc

© 2015 CC-BY-NC

Update on LOINC and RadLex Unification

Terminology Services to Reduce Avoidable CT Imaging F2F Meeting | 2015 10 14

Funding SupportContract from National Institute of Biomedical Imaging and Bioengineering

Phase 1: Computed Tomography Started Oct 2013, Ended September 2015

Some changes published in LOINC v2.52

More to be published in Dec LOINC release

Phase 2: All remaining modalities Funded by NIBIB effective 2015 10through 2017 09

Overall Goal:Produce a single unified source of names and codes for radiology procedures with a cooperative governance process.

Developing the Unified Radiology Model

Main DeliverablesDeveloping a Unified Model for Radiology Procedure Names

Mapping the attribute-values between each terminology (i.e. LOINC Parts to RadLex RIDs)

Mapping between RadLex RPIDs and LOINC codes

Unified Model Attribute Groupings “LOINC-speak”

ModalityMethod

Anatomy System

View Component†

Reason for Exam Component†

Guidance Component†

Pharmaceutical Challenge*

Subject Super System

* Currently no differentiation between chemical (contrast) and physical challenges † All part of the syntax used in creating the Component part name, but not labeled differently

A Users’ Guides for all attributes will be published as part of the LOINC Users Guide (coming in Dec 2015).

Planned Accessory File FormatLOINC Number

LOINC Common Name

Part Number

Part Type Name

Part Name

Seq Order

RID

RID Name

RPID

RPID Name

Governance

Recently Signed AgreementNew joint LOINC/RadLex Committee to be advisory body

LOINC codes as the primary identifier for radiology procedures (e.g. the universal codes) while linking to the RadLex attribute/values for each term so that they can be used as meta-data

Meetings at least once per year (open to public)

Distribution Artifacts

Distribution ArtifactsLOINC Table, RELMA (Regenstrief)

As is today

LOINC RSNA Playbook Table (Regenstrief) December 2015 LOINC release

Draft format as shown earlier

RadlLex Playbook Table (RSNA) Format determined by RSNA

New format for Version 2 (learned a lot from LOINC)

Includes “EXPORTED_TO_LOINC” attribute that points people to LOINC as we complete our work

A Few Summary StatsRPIDs mapped to LOINC: 104

# with exact attribute mappings: 65

New LOINCs created: 39

Active CT LOINCs: 740

RID codes mapped to: 228

Over 700+ LOINC terms edited

Looking ahead

Rough Order of Work

Year 1 MRI

US

Nuclear medicine

Radiography

Fluoroscopy

Year 2 Mammography

Image-guided interventional radiology procedures