2022 ICD-10-CM Code K90.9

Intestinal malabsorption, unspecified

Version 2021

Valid for Submission

ICD-10:K90.9
Short Description:Intestinal malabsorption, unspecified
Long Description:Intestinal malabsorption, unspecified

Code Classification

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

K90.9 is a billable diagnosis code used to specify a medical diagnosis of intestinal malabsorption, unspecified. The code K90.9 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.

The ICD-10-CM code K90.9 might also be used to specify conditions or terms like 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, etc.

Unspecified diagnosis codes like K90.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code K90.9 are found in the index:

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Convert K90.9 to ICD-9 Code

Information for Patients


Malabsorption Syndromes

Your small intestine does most of the digesting of the foods you eat. If you have a malabsorption syndrome, your small intestine cannot absorb nutrients from foods.

Causes of malabsorption syndromes include

Symptoms of different malabsorption syndromes can vary. They often include chronic diarrhea, abnormal stools, weight loss, and gas. Your doctor may use lab, imaging, or other tests to make a diagnosis.

Treatment of malabsorption syndromes depends on the cause.


[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)