ICD-10-CM 2027
ICD-10 code for Starch malabsorption
Malabsorption due to intolerance, not elsewhere classified
From the official ICD-10-CM alphabetic index entry “Malabsorption › starch”. Page updated September 29, 2026.
About coding Starch malabsorption
The ICD-10-CM code for Starch malabsorption is K90.49 (Malabsorption due to intolerance, not elsewhere classified).
Within K90.4 (other malabsorption due to intolerance), K90.49 is specifically for malabsorption due to intolerance, not elsewhere classified. Related codes cover Non-celiac gluten sensitivity (K90.41).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 391 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCC, relative weight 1.2392) and DRG 392 (Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCC, relative weight 0.7645), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Starch malabsorption ICD-10 codes
What is the ICD-10 code for Starch malabsorption?
- K90.49 — Malabsorption due to intolerance, not elsewhere classified.
Is K90.49 billable?
- Yes. K90.49 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K90.49 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K90.49 as a principal diagnosis.
Is K90.49 a CC or MCC?
- K90.49 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.