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ICD-10 diagnosis code

D81.9 Combined immunodeficiency, unspecified

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D81.9 is the ICD-10 code for Combined immunodeficiency, unspecified. It is a four-character subcategory of D81 (Combined 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

What D81.9 includes

Conditions and terms that are coded here.

  • Severe combined immunodeficiency disorder [SCID] NOS

D81.9 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

D81.9Kombinerad immunbrist, ospecificerad

NorwayICD-10-NO

D81.9Uspesifisert kombinert immunsvikt

DenmarkICD-10-DK

DD819Kombineret immundefekt UNS

  • DD819ASvær kombineret immundefekt (SCID) UNS
FinlandICD-10-FI

D81.9Määrittämätön sekamuotoinen immuunivajavuus

GermanyICD-10-GM

D81.9Kombinierter Immundefekt, nicht näher bezeichnet

FranceICD-10-FR

D81.9Déficit immunitaire combiné, sans précision

NetherlandsICD-10-NL

D81.9gecombineerde immunodeficiëntie, niet-gespecificeerd

United StatesICD-10-CM

D81.9Combined immunodeficiency, 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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