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ehr onc final certification - Department of Health Care Services

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should be capable <strong>of</strong> classifying and categorizing medications for the purpose <strong>of</strong> clinical<br />

quality measurement and clinical decision support. The National Library <strong>of</strong> Medicine<br />

(NLM) maintains the Unified Medical Language System® (UMLS®), which contains the<br />

mapping between RxNorm and commonly utilized drug vocabularies.<br />

At the time we published the Interim Final Rule, we noted that NLM, according to<br />

the most recent RxNorm release, listed a number <strong>of</strong> RxNorm drug data source providers<br />

with complete data sets integrated within RxNorm. After the Interim Final Rule was<br />

published, NLM subsequently released several more RxNorm versions. NLM has also<br />

reorganized the RxNorm documentation in a way that we believe more clearly specifies<br />

the intent <strong>of</strong> our standard. Accordingly, we believe that this standard, particularly in<br />

response to public comments, can be further clarified. In addition, to permit the<br />

development or mapping and use <strong>of</strong> other vocabularies independent <strong>of</strong> NLM, we have<br />

dropped the requirement that NLM explicitly identify the acceptable data sources.<br />

Instead, the standard now permits the use <strong>of</strong> codes from any drug vocabulary successfully<br />

included in RxNorm. To provide guidance and clarification to the industry, we will<br />

recognize any source vocabulary that is identified by NLM’s RxNorm Documentation as<br />

a source vocabulary included in RxNorm. We are therefore revising the standard to state:<br />

“Any source vocabulary that is included in RxNorm, a standardized nomenclature for<br />

clinical drugs produced by the United States National Library <strong>of</strong> Medicine.” We note<br />

that in section 3.1, <strong>of</strong> the most recent release <strong>of</strong> the “RxNorm Documentation (06/07/10,<br />

Version 2010-3) 7 ,” NLM has identified the following source vocabularies as being<br />

included in RxNorm.<br />

• GS - Gold Standard Alchemy<br />

7 http://www.nlm.nih.gov/research/umls/rxnorm/docs/2010/rxnorm_doco_full_2010-3.html<br />

Page 132 <strong>of</strong> 228

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