1. ICD-10-CM Codes
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2. K00-K95 Diseases of the digestive system
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3. K90-K95 Other diseases of the digestive system
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4. K90- Intestinal malabsorption
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2019 ICD-10-CM Diagnosis Code K90.9

Intestinal malabsorption, unspecified

2016 2017 2018 2019 Billable/Specific Code

• K90.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2019 edition of ICD-10-CM K90.9 became effective on October 1, 2018.
• This is the American ICD-10-CM version of K90.9 - other international versions of ICD-10 K90.9 may differ.

• Drug-induced malabsorption
• Intestinal malabsorption
• Malabsorption in the elderly
• Malabsorption syndrome
• Malabsorption, drug induced
• Malabsorption, intestinal

• A disorder characterized by inadequate absorption of nutrients in the small intestine. Symptoms include abdominal marked discomfort, bloating and diarrhea.
• A group of symptoms such as gas, bloating, abdominal pain, and diarrhea resulting from the body's inability to properly absorb nutrients.
• A syndrome resulting from the inadequate absorption of nutrients in the small intestine. Symptoms include abdominal pain, bloating, and diarrhea.
• General term for a group of malnutrition syndromes caused by failure of normal intestinal absorption of nutrients.
• Impaired absorption of nutrients in the gastrointestinal tract.
• Malabsorption: decreased absorption of fat and other nutrients caused by liver, biliary, pancreatic or intestinal disease. The 72-hour fecal fat determination is the best single test for mal- absorption.
• 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
  • celiac disease
  • lactose intolerance
  • short bowel syndrome, which happens after surgery to remove a large portion of the small intestine
  • whipple disease, a rare bacterial infection
  • genetic diseases
  • certain medicines
  treatment of malabsorption syndromes depends on the cause.

• 391 Esophagitis, gastroenteritis and miscellaneous digestive disorders with mcc
• 392 Esophagitis, gastroenteritis and miscellaneous digestive disorders without mcc

Convert K90.9 to ICD-9-CM

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change

• Disturbance(s) - see also Disease
  • absorption K90.9
  • assimilation, food K90.9
• Malabsorption K90.9
  • intestinal K90.9
  • syndrome K90.9
• Malassimilation K90.9
• Steatorrhea (chronic) K90.9
  • idiopathic K90.9 (adult) (infantile)
• Syndrome - see also Disease
  • malabsorption K90.9

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.