ICD-9 Diagnosis Code 558.42

Eosinophilic colitis

Diagnosis Code 558.42

ICD-9: 558.42
Short Description: Eosinophilic colitis
Long Description: Eosinophilic colitis
This is the 2014 version of the ICD-9-CM diagnosis code 558.42

Code Classification
  • Diseases of the digestive system
    • Noninfective enteritis and colitis (555-558)
      • 558 Other noninfective gastroenteritis and colitis

Information for Medical Professionals

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The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

Index of Diseases and Injuries
References found for the code 558.42 in the Index of Diseases and Injuries:

    • Colitis (acute) (catarrhal) (croupous) (cystica superficialis) (exudative) (hemorrhagic) (noninfectious) (phlegmonous) (presumed noninfectious) 558.9
      • eosinophilic 558.42

Information for Patients

Eosinophilic Disorders

Also called: Eosinophilia

Eosinophils are a type of white blood cell. They help fight off infections and play a role in your body's immune response. They can also build up and cause inflammation.

Normally your blood doesn't have a large number of eosinophils. Your body may produce more of them in response to

  • Allergic disorders
  • Skin conditions
  • Parasitic and fungal infections
  • Autoimmune diseases
  • Some cancers
  • Bone marrow disorders

In some conditions, the eosinophils can move outside the bloodstream and build up in organs and tissues. Treatment of the problem depends on the cause.

  • Eosinophil count - absolute
  • Eosinophilic fasciitis
  • Simple pulmonary eosinophilia

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