A CDA document is a defined and complete information object that can exist outside of a messaging context and/or can be a MIME-encoded payload within an HL7 message.

• CDA文档作为确定而完整的信息对象，可以独立于消息环境单独存在，同时（或者）可以作为MIME编码的有效载荷存在于HL7消息中。