Intestinal malabsorption
In Other diseases of the digestive system (K90-K95), chapter 11: Diseases of the Digestive System
13 billable codes under K90: 12 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.
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Instructional notes
Excludes1: not coded here, use a different code
- intestinal malabsorption following gastrointestinal surgery (K91.2)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
There are no chapter-specific rules for Chapter 11 yet, so the general rules in Section I.B apply.
All codes under K90
K90 can't be used on a claim. Pick a billable code below; grey headings group them.
- K90.0Celiac disease
- K90.1Tropical sprue
- K90.2Blind loop syndrome, not elsewhere classified
- K90.3Pancreatic steatorrhea
- K90.4Other malabsorption due to intolerance
- K90.41Non-celiac gluten sensitivity
- K90.49Malabsorption due to intolerance, not elsewhere classified
- K90.8Other intestinal malabsorption
- K90.81Whipple's disease
- K90.82Short bowel syndrome
- K90.821Short bowel syndrome with colon in continuity
- K90.822Short bowel syndrome without colon in continuity
- K90.829Short bowel syndrome, unspecified
- K90.83Intestinal failure
- K90.89Other intestinal malabsorption
- K90.9Intestinal malabsorption, unspecified
K90 MS-DRGs
As the principal diagnosis, the billable codes under K90 group to MS-DRG 391, 392, 393, 394, or 395 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 391 Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC (12 of 13 codes)
- DRG 392 Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC (12 of 13 codes)
- DRG 393 Other Digestive System Diagnoses with MCC (1 of 13 codes)
- DRG 394 Other Digestive System Diagnoses with CC (1 of 13 codes)
- DRG 395 Other Digestive System Diagnoses without CC/MCC (1 of 13 codes)
Other codes that refer to K90
Notes on these codes point to K90.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
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.
Read more about malabsorption syndromes on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.