HL7 CDA Core Principles

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Introduction

This implementation guide specifies the Core Principles of using the Clinical Document Architecture[1].

Scope

Focus of this document: HL7 Version 3 Data Types for CDA

Background

Legend of symbols

Version history

Common aspects

Use of XML

Character Set

CDA document structure

Data types

Introduction

XML representation of data types

Exceptions using XML element content

Combined data types

Conformance information

Missing values (null flavor)

ANY as the generic data type

Boolean (BL)

Instance Identifier (II)

Encapsulated Data (ED)

Strings (ST)

Concept Descriptor (CD)

Coded with Equivalents (CE)

Coded Value (CV)

Coded Simple Value (CS)

Telecommunication Address (TEL)

Postal Address (AD)

Person Name (PN)

Organisation Name (ON)

Integer Number (INT)

Physical Quantities (PQ)

Point in Time (TS)

Intervals (IVL)

Interval of time (IVL_TS)

Interval of physical quantities (IVL_PQ)

Ratio of quantities (RTO_QTY_QTY)

Identification mechanisms

Object Identifiers (OIDs)

Instance identification

Coding scheme identification

List of identification schemes

List of code systems

Vocabulary

Code Systems

Value Sets

Appendix

  1. Clinical Document Archi-tecture Release 2 http://www.hl7.org