2020 ICD-10-CM Diagnosis Code K90

Intestinal malabsorption

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • K90 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM K90 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of K90 - other international versions of ICD-10 K90 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as K90. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • intestinal malabsorption following gastrointestinal surgery (
    ICD-10-CM Diagnosis Code K91.2

    Postsurgical malabsorption, not elsewhere classified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Postsurgical blind loop syndrome
    Type 1 Excludes
    • malabsorption osteomalacia in adults (M83.2)
    • malabsorption osteoporosis, postsurgical (M80.8-, M81.8)
    K91.2
    )
The following code(s) above K90 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to K90:
  • K00-K95
    2020 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the digestive system
Clinical Information
  • 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.
Code History
  • 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
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to K90:
  • Type 1 Excludes: K59
    ICD-10-CM Diagnosis Code K59

    Other functional intestinal disorders

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • change in bowel habit NOS (R19.4)
    • intestinal malabsorption (K90.-)
    • psychogenic intestinal disorders (F45.8)
    Type 2 Excludes
    • functional disorders of stomach (K31.-)
ICD-10-CM Codes Adjacent To K90
K86 Other diseases of pancreas
K86.0 Alcohol-induced chronic pancreatitis
K86.1 Other chronic pancreatitis
K86.2 Cyst of pancreas
K86.3 Pseudocyst of pancreas
K86.8 Other specified diseases of pancreas
K86.81 Exocrine pancreatic insufficiency
K86.89 Other specified diseases of pancreas
K86.9 Disease of pancreas, unspecified
K87 Disorders of gallbladder, biliary tract and pancreas in diseases classified elsewhere
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

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