Diagnosis Code


Code Information

Diagnosis Code: K90.9

Short Description: Intestinal malabsorption, unspecified

Long Description: Intestinal malabsorption, unspecified

The code K90.9 is VALID for claim submission

Code Classification:

  • Diseases of the digestive system (K00–K93)
    • Other diseases of the digestive system (K90-K95)
      • Intestinal malabsorption (K90)
        • K90.9 Intestinal malabsorption, unspecified

Code Version: 2020 ICD-10-CM


  • Abnormal intestinal absorption
  • Chronic steatorrhea
  • Disorder of gastrointestinal tract co-occurrent with human immunodeficiency virus infection
  • Fatty stool
  • Folate deficiency anemia due to malabsorption
  • Gastrointestinal malabsorption syndrome co-occurrent with human immunodeficiency virus infection
  • Hyperparathyroidism due to intestinal malabsorption
  • Intestinal malabsorption
  • Intestinal malabsorption
  • Intestinal malabsorption due to bile acid synthesis defect
  • Intolerance to monosodium glutamate
  • Intolerance to substance
  • Malabsorption due to infective agent
  • Malabsorption syndrome
  • Malabsorption syndrome due to acquired intolerance to fructose
  • Malabsorption syndrome due to intolerance to lactose
  • Megaloblastic anemia due to impaired absorption of folate
  • Osteoporosis due to malabsorption
  • Post-infective malabsorption
  • Primary malabsorption of infancy

Diagnostic Related Group(s)

The code K90.9 is grouped in the following Diagnostic Related Group(s) (MS-DRG v37.0)
  • Esophagitis, Gastroenteritis And Miscellaneous Digestive Disorders With Mcc (391)
  • Esophagitis, Gastroenteritis And Miscellaneous Digestive Disorders Without Mcc (392)

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
K90.9 Right Arrow 579.9 Intest malabsorption 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
K90 Intestinal malabsorption
K90.0 Celiac disease
K90.1 Tropical sprue
K90.2 Blind loop syndrome, not elsewhere classified
K90.3 Pancreatic steatorrhea
K90.4 Other malabsorption due to intolerance
K90.41 Non-celiac gluten sensitivity
K90.49 Malabsorption due to intolerance, not elsewhere classified
K90.8 Other intestinal malabsorption
K90.81 Whipple's disease
K90.89 Other intestinal malabsorption

This page was last updated on: 10/1/2020