K52.81 Eosinophilic gastritis or gastroenteritis

Billable ICD-10-CM code, FY2026.

Applicable to

• Eosinophilic enteritis

Excludes2 (not included here)

• eosinophilic esophagitis (K20.0)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 535.70 Eosinophilic gastritis, without mention of hemorrhage (approximate)
• 535.71 Eosinophilic gastritis, with hemorrhage (approximate)
• 558.41 Eosinophilic gastroenteritis (approximate)

Code annotations containing back-references to K52.81

Back-references to K52.81

• Type 2 Excludes: K20 Esophagitis ("eosinophilic gastritis or gastroenteritis (K52.81)")
• Type 1 Excludes: K29 Gastritis and duodenitis ("eosinophilic gastritis or gastroenteritis (K52.81)")
• Type 2 Excludes: K52.2 Allergic and dietetic gastroenteritis and colitis ("allergic eosinophilic gastritis (K52.81)")
• Type 2 Excludes: K52.2 Allergic and dietetic gastroenteritis and colitis ("allergic eosinophilic gastroenteritis (K52.81)")

Diagnosis Index entries for K52.81

• Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) › allergic › with › eosinophilic gastritis or gastroenteritis
• Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) › eosinophilic
• Gastritis (simple) › eosinophilic
• Gastroenteritis (acute) (chronic) (noninfectious) › allergic › with › eosinophilic gastritis or gastroenteritis
• Gastroenteritis (acute) (chronic) (noninfectious) › eosinophilic

Nearby codes

• K52.21 Food protein-induced enterocolitis syndrome
• K52.22 Food protein-induced enteropathy
• K52.29 Other allergic and dietetic gastroenteritis and colitis
• K52.3 Indeterminate colitis
• K52.8 Other specified noninfective gastroenteritis and colitis
• K52.81 Eosinophilic gastritis or gastroenteritis (this code)
• K52.82 Eosinophilic colitis
• K52.83 Microscopic colitis
• K52.831 Collagenous colitis
• K52.832 Lymphocytic colitis
• K52.838 Other microscopic colitis