A prototype model using clinical document architecture (CDA) with a Japanese local standard: Designing and implementing a referral letter system

Huang Yong, Guo Jinqiu, Yoshio Ohta

Research output: Contribution to journalArticle

7 Citations (Scopus)


Since clinical document architecture (CDA) became an American National Standards Institute (ANSI) -approved health level seven (HL7) Standard, many countries have begun making an effort to make local standards conform to CDA. In order to make CDA compatible with the many different local standards existing in different countries, we designed a prototype model using HL7 CDA R2 with medical markup language (MML), a Japanese medical data exchange standard. Furthermore, a referral letter system based on this model was developed. Archetypes were used to express medical concepts in a formal manner and to make 2 different standards work collaboratively. We share herein the experience gathered in designing and implementing a referral letter system based on HL7 CDA, Release 2 (CDA R2). We also outline the challenges encountered in our project and the opportunities to widen the scope of this approach to other clinical documents. Copyright

Original languageEnglish
Pages (from-to)15-20
Number of pages6
JournalActa medica Okayama
Issue number1
Publication statusPublished - Feb 1 2008



  • Archetype
  • Clinical document architecture
  • Health level seven
  • Medical markup language

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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