K52.81 Eosinophilic gastritis or gastroenteritis

The ICD-10-CM code for Eosinophilic gastritis or gastroenteritis is K52.81 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

11: Diseases of the digestive system (K00-K95)

Section

K50-K52: Noninfective enteritis and colitis (K50-K52)

Category K52

18 codes (14 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to K52.81:

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

Inclusion Terms

• Eosinophilic enteritis

U.S. Hospital Utilization

• An estimated 620 U.S. inpatient stays in 2023 included K52.81 among the documented diagnoses.
• 165 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Chapter 11 reserved for future expansion

11. Chapter 11: Diseases of the Digestive System (K00-K95) Reserved for future guideline expansion

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)

Cite This Page

Reference K52.81 with the canonical source and edition:

K52.81 — Eosinophilic gastritis or gastroenteritis. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/K52.81

Canonical URL: https://icd10codingpro.com/codes/K52.81