Diagnosis Code

D89.9 DISORDER INVOLVING THE IMMUNE MECHANISM, UNSPECIFIED


Code Information

Diagnosis Code: D89.9

Short Description: Disorder involving the immune mechanism, unspecified

Long Description: Disorder involving the immune mechanism, unspecified

The code D89.9 is VALID for claim submission

Code Classification:

  • Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50–D89)
    • Certain disorders involving the immune mechanism (D80-D89)
      • Oth disorders involving the immune mechanism, NEC (D89)
        • D89.9 Disorder involving the immune mechanism, unspecified

Code Version: 2022 ICD-10-CM


Synonyms

  • Abnormal host defense
  • Abnormal host response
  • Acquired ataxia
  • Acute nephritis due to another disorder
  • Acute tubulointerstitial nephritis
  • Acute tubulo-interstitial nephritis due to immunological disorder
  • Antibody-mediated activation and inactivation
  • Ataxia due to disorder of immune function
  • Autoimmune AND/OR graft reaction
  • Autoimmune reaction
  • Autoimmune state
  • Autoimmune vasculitis
  • Autonomic neuropathy due to disorder of immune function
  • Chorea due to immunological disorder
  • Chronic disease of immune function
  • Chronic disease of immune structure
  • Cryopathy
  • Disorder of immune function
  • Disorder of immune function due to systemic lupus erythematosus
  • Disorder of immune structure
  • Drug-induced autoimmune reaction
  • Epilepsy due to immune disorder
  • Glomerular disorders in blood diseases and disorders involving the immune mechanism
  • Granulocyte abnormality due to immune defect
  • Hereditary disorder of immune system
  • Hypertrophic pachymeningitis due to disorder of immune function
  • Immune defect
  • Immune system complication of procedure
  • Immune-mediated neuropathy
  • Immunosuppression-related infectious disease
  • Induced autoimmune reaction
  • Microcephaly, hypogammaglobulinemia, abnormal immunity syndrome
  • Nonspecific immune reaction
  • Pachymeningitis
  • Panniculitis due to immunological disorder
  • Postvaccinal autoimmune reaction
  • Renal tubulo-interstitial disorders in blood diseases and disorders involving the immune mechanism
  • Spondyloenchondrodysplasia
  • Spondyloenchondrodysplasia with immune dysregulation
  • Ulcer of esophagus due to disorder of immune system

Diagnostic Related Group(s)

The code D89.9 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)
  • Reticuloendothelial And Immunity Disorders With Mcc (814)
  • Reticuloendothelial And Immunity Disorders With Cc (815)
  • Reticuloendothelial And Immunity Disorders Without Cc/mcc (816)

References to Index of Diseases and Injuries

The code D89.9 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Inclusion Terms:
    • Immune disease NOS

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
D89.9 Right Arrow 279.9 Immune mechanism dis NOS

This ICD-10 to ICD-9 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-10 Code ICD-10 Description
D89 Other disorders involving the immune mechanism, not elsewhere classified
D89.0 Polyclonal hypergammaglobulinemia
D89.1 Cryoglobulinemia
D89.2 Hypergammaglobulinemia, unspecified
D89.3 Immune reconstitution syndrome
D89.4 Mast cell activation syndrome and related disorders
D89.40 Mast cell activation, unspecified
D89.41 Monoclonal mast cell activation syndrome
D89.42 Idiopathic mast cell activation syndrome
D89.43 Secondary mast cell activation
D89.44 Hereditary alpha tryptasemia
D89.49 Other mast cell activation disorder
D89.8 Other specified disorders involving the immune mechanism, not elsewhere classified
D89.81 Graft-versus-host disease
D89.810 Acute graft-versus-host disease
D89.811 Chronic graft-versus-host disease
D89.812 Acute on chronic graft-versus-host disease
D89.813 Graft-versus-host disease, unspecified
D89.82 Autoimmune lymphoproliferative syndrome [ALPS]
D89.83 Cytokine release syndrome
D89.831 Cytokine release syndrome, grade 1
D89.832 Cytokine release syndrome, grade 2
D89.833 Cytokine release syndrome, grade 3
D89.834 Cytokine release syndrome, grade 4
D89.835 Cytokine release syndrome, grade 5
D89.839 Cytokine release syndrome, grade unspecified
D89.84 IgG4-related disease
D89.89 Other specified disorders involving the immune mechanism, not elsewhere classified


This page was last updated on: 10/1/2023