11th Revision of the International Classification of Diseases (ICD-11)


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It seems like we just started using ICD-10 (although it went into effect in 2015) and the World Health Organization is planning to release ICD-11 on January 1, 2022.  

In an article titled “WHO Group Discusses ICD-11 Transitoin Planning”, written by Sue Bowman, MJ, RHIA, CCS, FAHIMA and recently published in the Journal of AHIMA, it stated ICD-11 was adopted by the World Health Assembly on May 25, 2019 and will go into effect January 1, 2022.  

The article outlined some of the reasons WHO believes ICD-11 is necessary:

  • The current ICD-10 version is outdated clinically and from the classification perspective. 
  • Some chapters needed substantial structural changes. 
  • Changes needed could not be incorporated under the normal ICD-10 update mechanisms.
  • Operating in an electronic environment is an increasing need.
  • Additional information needs to be collected especially for morbidity purposes.

The article went on to say, ICD-11 is anticipated to support multiple use cases and will incorporate many critical advances in science and medicine.  ICD-11 is 100% electronic and can be integrated with EHR’s and other information systems.

Some of the major differences in ICD-11 are:

  • The use of extension codes for temporality, severity and anatomic detail
  • Code clustering – using two or more codes to describe a diagnostic entity. The example the article gave is the code cluster DA63/ME24.90 which translates to duodenal ulcer with associated acute gastrointestinal bleeding. 
  • Some chapters have been restructured (such as infectious disease, HIV, valve diseases)
  • Some diseases have changed location (such as cerebrovascular diseases moved from the circulatory chapter to the nervous system chapter).
  • New chapters – there are six new chapters which include:
    • Diseases of the Blood and Blood-forming Organs
    • Disorders of the Immune System
    • Conditions Related to Sexual Health
    • Sleep-Wake Disorders
    • Extension Codes
    • Traditional Medicine

WHO committees and workgroups have agreed that any implementation plan must include:

  • An evaluation of ICD-11 for national purposes
  • Impact analysis
  • Value proposition for stakeholders
  • Risk assessment
  • Identification of stakeholders
  • Resource planning
  • Timeline
  • Communication plan
  • Training plan

The article mentioned that it is unknown when the U.S. will implement ICD-11, however, discussions around ICD-11 transition planning have already begun at the federal level and there is a roundtable meeting scheduled in August in Washington D.C.

To review the full article written by Sue Bowman, click here.

Image by vjohns1580 from Pixaba