K90.1 Tropical sprue

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Sprue NOS
• Tropical steatorrhea

Applies from K90 Intestinal malabsorption

Excludes1 (never code together)

• intestinal malabsorption following gastrointestinal surgery (K91.2)

Risk adjustment (HCC)

• RxHCC V08: HCC 66 — Pancreatic Disorders and Intestinal Malabsorption, Except Pancreatitis

MS-DRG index

Defines the logic of DRG(s) 391-392 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 579.1 Tropical sprue

Code annotations containing back-references to K90.1

Back-references to K90

• Type 1 Excludes: K59 Other functional intestinal disorders ("intestinal malabsorption (K90.-)")

Diagnosis Index entries for K90.1

• Cochin-China diarrhea
• Diarrhea, diarrheal (disease) (infantile) (inflammatory) › Cochin-China
• Diarrhea, diarrheal (disease) (infantile) (inflammatory) › hill
• Diarrhea, diarrheal (disease) (infantile) (inflammatory) › tropical
• Psilosis (sprue) (tropical)
• Sprue (tropical)
• Steatorrhea (chronic) › tropical

Nearby codes

• K90 Intestinal malabsorption
• K90.0 Celiac disease
• K90.1 Tropical sprue (this code)
• 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