HL7 CDA R2 AIS Implementation Guide
HL7 CDA R2 AIS Implementation Guide
HL7 CDA R2 AIS Implementation Guide
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<strong>HL7</strong> Additional Information Specification <strong>Implementation</strong> <strong>Guide</strong><strong>CDA</strong><strong>R2</strong><strong>AIS</strong>0000R0303.7.7.2 AD in the Body, Human-Decision VariantXML parsers normalize white space in P<strong>CDA</strong>TA. In particular they convert embedded new linecharacters to spaces. The sender should use the <strong>CDA</strong> line break element to send the multi-lineaddress as shown below.124 Elm StApt 12Elmo, UT 859123.7.8 Concept Descriptor Data Type (CD)3.7.8.1 CD in the Header or in EntriesCertain elements in the header provide a coded value. These are defined in the <strong>CDA</strong> schemas tofollow a consistent pattern of attributes. These elements shall be populated as described in the<strong>CDA</strong> schemas.Example:3.7.8.2 CD For the Human-Decision VariantWhen a <strong>CDA</strong> attachment of the human-decision variant contains a body element for which theAdditional Information Specification calls for an item with a CD data type, the code should besent in the P<strong>CDA</strong>TA of the content. Additional explanatory information should be included.If the code value is available, the sender should include the code value as well as a textualexplanation of its meaning. This applies particularly to medical codes such as ICD-9-CM, ICD-10-CM, HCPCS and SNOMED.Example:296.4 BIPOLAR AFFECTIVE D/O3.7.9 Coded Ordinal Data Type (CO)(mike: NEW SUBSECTION- Need to double-check for content and relevance.)The Coded Ordinal (CO) Data Type is represented exactly as the CD data type, above. Use ofthis data type acts as an indicator that the codes are ordered, and can thus be compared to eachother in some way. For example, in the Global Assessment of Functioning (GAF) coding systemused in the Rehabilitation Services Attachment, the coding system describes the patient level offunctioning on a scale, and thus, two code values can be compared to see if the patient function isimproving.3.7.10 Boolean Data Type (BL)When an Additional Information Specification specifies a Boolean datum, it shall be present in aPage 62March 2007Copyright © 1998-2007Health Level Seven, Inc. All rights reserved.Release 3.0 Draft Standard
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