New diagnosis codes for COVID-19 immunization status, by Robert W. Malone, MD, MS

The new codes mean they will have a more efficient way to track your Covid vaccination status, and to disseminate that data. From Robert W. Malone, MD, MS, at

Just what does ICD code Z28.310: Unvaccinated for COVID-19 mean?

ICD serves a broad range of uses globally and provides critical knowledge on the extent, causes and consequences of human disease and death worldwide via data that is reported and coded with the ICD. Clinical terms coded with ICD are the main basis for health recording and statistics on disease in primary, secondary and tertiary care, as well as on cause of death certificates. These data and statistics support payment systems, service planning, administration of quality and safety, and health services research. Diagnostic guidance linked to categories of ICD also standardizes data collection and enables large scale research.

For more than a century, the International Classification of Diseases (ICD) has been the basis for comparable statistics on causes of mortality and morbidity between places and over time. Originating in the 19th century, the latest version of the ICD, ICD-11, was adopted by the 72nd World Health Assembly in 2019 and came into effect on 1st January 2022.   

World Health Organization (WHO)

The ICD system is used extensively in the USA and the world. With the passage by Congress of the Affordable Care Act (Obamacare) in 2012, the ICD coding system became fully integrated with the digitization of healthcare records in the USA.

According to the Centers for Disease Control (CDC),

“In addition to the main ICD, WHO authorizes the U.S. government to develop a modification for classifying morbidity from inpatient and outpatient records, physician offices, and most National Center for Health Statistics (NCHS) surveys.  This modification is known as the International Classification of Diseases, Clinical Modification (ICD-CM).”

This is important, as the WHO is authorizing the US government to modify the classification system to meet specific needs. The ICD classification system is run by the World Health Organization, not the US government.

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2 responses to “New diagnosis codes for COVID-19 immunization status, by Robert W. Malone, MD, MS

  1. Leo Hohmann had an article about this as well that I linked last Thursday @
    Here’s the link if any of your readers wish to read it.


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