So many Schemes, Too little Said

Five Schemes

Total
745,470*
SNOMED
293,609
HDD
215,599
ICD9CM
17,550
VA
102,428
RxNORM
116,284

884,429 words in Shakespeare's 43 works.

* Jan 2013

Disorder: match Hypertension
ICD, SNOMED, HDD, VA twice Lexicon, NDFRT
Drug: search Acetaminophen
VA, SNOMED, RxNORM, HDD. VA twice - NDFRT, VANDF
Allergen's: Avocado
VA, SNOMED, HDD
Vitals: Coordinate or not
VA BP + VA Sitting vs HDD BP Sitting - VA Vitals + VA Qualifier vs HDD

Remove Redundancy, boil close to SNOMED's broad coverage

Spotting Clones

3M HDD Open Access Content, Release notes ...

HDD Access terminology content version 2 contains 215,658 unique concepts ... (BUT) Standard terminologies included are ...

Total the standard terminology clones ...

APC850
International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) Diseases17733
International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) Procedures4663
ICD-10-CM Domain70229
International Classification of Diseases, 10th Revision, Procedure Classification System (ICD-10-PCS)72518
HCPCS Modifiers310
HCFA Common Procedure Coding System5585
TRICARE/CHAMPUS MS-DRG462
Medicare Severity-Diagnosis Related Groups Domain407
CMS DRG Major Diagnostic Categories Domain25
172,782 (80.1%)

But will you keep your clones stay in sync? The partial cloning of SNOMED highlights the sync'ing problem.

Where's the Beef?

Irritable bowel syndrome meet Esophageal cancer

One Standard Format

Each scheme is now delivered in its own proprietary format

Why not use the RDF-based, web-oriented model for knowledge schemes ...

Simple Knowledge Organization System (SKOS), a common data model for sharing and linking knowledge organization systems via the Web ... Many knowledge organization systems, such as thesauri, taxonomies, classification schemes and subject heading systems, share a similar structure, and are used in similar applications. SKOS captures much of this similarity and makes it explicit, to enable data and technology sharing across diverse applications.
SNOMED, not Shakespeare Size
Begone Copies
Work on Nuance
Deliver in one format