279.9 IMMUNE MECHANISM DIS NOS


Code Information

Diagnosis Code: 279.9

Short Description: Immune mechanism dis NOS

Long Description: Unspecified disorder of immune mechanism

Code Classification:

  • Endocrine, nutritional and metabolic diseases, and immunity disorders (240–279)
    • Other metabolic disorders and immunity disorders (270-279)
      • 279 Disorders involving the immune mechanism
        • 279.9 Immune mechanism dis NOS

Code Version: 2015 ICD-9-CM


References to Index of Diseases and Injuries

The code 279.9 has the following ICD-9-CM references to the Index of Diseases and Injuries
  • Disease, diseased - see also Syndrome
    • immunologic NEC 279.9
  • Disorder - see also Disease
    • immune mechanism (immunity) 279.9
      • single complement (C1-C9)�279.8
      • specified type NEC 279.8

Crosswalk Information

The code 279.9 converts into the following ICD-10 code(s):
ICD-9 Code ICD-10 Code ICD-10 Description
279.9 Right Arrow D89.9 Disorder involving the immune mechanism, unspecified
This ICD-9 to ICD-10 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-9 Code ICD-9 Description
279.00 Hypogammaglobulinemia, unspecified
279.01 Selective IgA immunodeficiency
279.02 Selective IgM immunodeficiency
279.03 Other selective immunoglobulin deficiencies
279.04 Congenital hypogammaglobulinemia
279.05 Immunodeficiency with increased IgM
279.06 Common variable immunodeficiency
279.09 Other deficiency of humoral immunity
279.10 Immunodeficiency with predominant T-cell defect, unspecified
279.11 Digeorge's syndrome
279.12 Wiskott-aldrich syndrome
279.13 Nezelof's syndrome
279.19 Other deficiency of cell-mediated immunity
279.2 Combined immunity deficiency
279.3 Unspecified immunity deficiency
279.41 Autoimmune lymphoproliferative syndrome
279.49 Autoimmune disease, not elsewhere classified
279.50 Graft-versus-host disease, unspecified
279.51 Acute graft-versus-host disease
279.52 Chronic graft-versus-host disease
279.53 Acute on chronic graft-versus-host disease
279.8 Other specified disorders involving the immune mechanism


This page was last updated on: 10/1/2014