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ICD-10 diagnosis code

D84.9 Immunodeficiency, unspecified

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D84.9 is the ICD-10 code for Immunodeficiency, unspecified. It is a four-character subcategory of D84 (Other immunodeficiencies), the most specific level in the WHO edition. It belongs to the block D80–D89 (Certain disorders involving the immune mechanism) in Chapter III, Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.

Code type
Subcategory (4 characters)
Chapter
III · D50–D89
Classification
WHO ICD-10, 2019 version

D84.9 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

D84.9Immunbrist, ospecificerad

NorwayICD-10-NO

D84.9Uspesifisert immunsvikt

DenmarkICD-10-DK

DD849Immundefekt UNS

FinlandICD-10-FI

D84.9Määrittämätön immuunivajavuus

GermanyICD-10-GM

D84.9Immundefekt, nicht näher bezeichnet

FranceICD-10-FR

D84.9Déficit immunitaire, sans précision

NetherlandsICD-10-NL

D84.9immunodeficiëntie, niet-gespecificeerd

United StatesICD-10-CM

D84.9Immunodeficiency, unspecified

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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