K29.51 Unspecified chronic gastritis 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)

Applies from K29.5 Unspecified chronic gastritis

Applicable to

• Chronic antral gastritis
• Chronic fundal gastritis

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 535.11 Atrophic gastritis, with hemorrhage (approximate)

Code annotations containing back-references to K29.51

Back-references to K29

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

Diagnosis Index entries for K29.51

• Antritis › stomach › with bleeding
• Gastritis (simple) › chronic (antral) (fundal) › with bleeding

Nearby codes

• K29.4 Chronic atrophic gastritis
• K29.40 Chronic atrophic gastritis without bleeding
• K29.41 Chronic atrophic gastritis with bleeding
• K29.5 Unspecified chronic gastritis
• K29.50 Unspecified chronic gastritis without bleeding
• K29.51 Unspecified chronic gastritis with bleeding (this code)
• K29.6 Other gastritis
• K29.60 Other gastritis without bleeding
• K29.61 Other gastritis with bleeding
• K29.7 Gastritis, unspecified
• K29.70 Gastritis, unspecified, without bleeding