The eighth revision of the original (Bertillon’s) classification of causes of death but also encompassing diseases is referenced in this article at the WHO website.

The conference for the eighth revision was organised by the World Health Organisation and held in Geneva in 1965. According to the article above, the eighth revision did not change the essential structure of the classifications.

I undertook a quick search in Medline using the search term “icd-8” which returned 207 articles. Scanning through these there were a few papers that compared ICD-8 with ICD-10 (here, here and here). There were also a few papers comparing ICD-8 with DSM-III (here, here, here and here). This WHO Bulletin article looks at mortality statistics discontinuities between various versions of ICD. Whilst there were one or two other papers featuring ICD-8 diagnoses, ICD-8 was not the focus of those papers.

So in summary, the WHO had taken over the revising of the classifications with the sixth revision which also included the classification rules. In revisions 7 and 8 there weren’t any fundamental changes to the classification.

Appendix A – Other Posts in the Series on Health Information Exchanges

A Literature Review of 40 years of SNOMED

Arizona Statewide Health Information Exchange

A History of The Health Information Exchange in Pennsylvania

The Arkansas Health Information Exchange – SHARE

The California Health Information Exchange – Cal Index

Creating a Health Information Exchange in Arizona

Health Information Exchanges

Health Information Exchanges and Chronic Conditions

HIPPA and Health Information Exchanges


ICD-SNOMED-CT® Harmonisation

ICD-1 – Well…near enough







Körner Data and SNOMED: A Snapshot from 1988

Mapping ICD 9 (or 10) to SNOMED CT®

Over 1 Million Relationships: SNOMED CT ®

Standardisation of Health Information Technology in New Zealand

Statisticians were Responsible for the Development of an International Classification of Diseases

Why Do We Need Electronic Record Systems to Talk to Each Other

Appendix B – Definition of Health Information Exchange

This is the definition of the Health Information Exchange that I use (Hersh et al, 2015)

Health information exchange (HIE), the electronic sharing of clinical information across the boundaries of health care organizations

Index: There are indices for the TAWOP site here and here

Twitter: You can follow ‘The Amazing World of Psychiatry’ Twitter by clicking on this link.

TAWOP Channel: You can follow the TAWOP Channel on YouTube by clicking on this link.

Responses: If you have any comments, you can leave them below or alternatively e-mail justinmarley17@yahoo.co.uk.

Disclaimer: The comments made here represent the opinions of the author and do not represent the profession or any body/organisation. The comments made here are not meant as a source of medical advice and those seeking medical advice are advised to consult with their own doctor. The author is not responsible for the contents of any external sites that are linked to in this blog.

Conflicts of Interest: *For potential conflicts of interest please see the About section.


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