K29.91 Gastroduodenitis, unspecified, with bleeding

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

Applies from K29 Gastritis and duodenitis

Excludes1 (never code together)

• eosinophilic gastritis or gastroenteritis (K52.81)
• Zollinger-Ellison syndrome (E16.4)

MS-DRG index

Defines the logic of DRG(s) 377-379 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 535.51 Unspecified gastritis and gastroduodenitis, with hemorrhage (approximate)

Code annotations containing back-references to K29.91

Back-references to K29

• Type 1 Excludes: K92.2 Gastrointestinal hemorrhage, unspecified ("gastritis and duodenitis with hemorrhage (K29.-)")

Diagnosis Index entries for K29.91

• Gastroduodenitis › with bleeding
• Pyloritis › with bleeding

Nearby codes

• K29.8 Duodenitis
• K29.80 Duodenitis without bleeding
• K29.81 Duodenitis with bleeding
• K29.9 Gastroduodenitis, unspecified
• K29.90 Gastroduodenitis, unspecified, without bleeding
• K29.91 Gastroduodenitis, unspecified, with bleeding (this code)