Valid for Submission
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:
- - Malassimilation - K90.9
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- 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 Groups - MS-DRG Mapping
|MS-DRG||MS-DRG Title||MCD||Relative Weight|
|391||ESOPHAGITIS, GASTROENTERITIS AND MISCELLANEOUS DIGESTIVE DISORDERS WITH MCC||06||1.2444|
|392||ESOPHAGITIS, GASTROENTERITIS AND MISCELLANEOUS DIGESTIVE DISORDERS WITHOUT MCC||06||0.7644|
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.
Convert K90.9 to ICD-9 Code
Information for Patients
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. This happens after surgery to remove half or more of the small intestine. You might need the surgery if you have a problem with the small intestine from a disease, injury, or birth defect.
- Whipple disease, a rare bacterial infection
- Genetic diseases
- Certain medicines
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]