HL7 Additional Information Specification

The LOINC code 18627-0 identifies the request for date of onset; the specified date is March 26, 2003. The LOINC code 19007-4 identifies the primary diagnosis. This element is transmitted in two parts: 18820-1 identifies the coded diagnosis, 296.4; SN="ICD-9-CM" in that element indicates that the code is from the ICD-9-CM code set. Figure 2.6 3. ................
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