All ICD10 Codes

K52.2

Non-Billable
ChapterK00–K95
Ranksubcategory
Official Description

Allergic and dietetic gastroenteritis and colitis

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 11: Diseases of the Digestive System (K00-K95).

Instructional Notes

Includes
  • Food hypersensitivity gastroenteritis or colitis
Excludes2(Not included here)
  • allergic eosinophilic colitis (K52.82)
  • allergic eosinophilic esophagitis (K20.0)
  • allergic eosinophilic gastritis (K52.81)
  • allergic eosinophilic gastroenteritis (K52.81)
Use Additional Code
General instructions are available for the parent sections:
View CH11 NotesView K50-K52 Notes

Clinical Hierarchy

CH11Diseases of the digestive system (K00-K95)
K50-K52Noninfective enteritis and colitis (K50-K52)
K52Other and unspecified noninfective gastroenteritis and colitis
K52.2Allergic and dietetic gastroenteritis and colitis
K52.21Food protein-induced enterocolitis syndrome
K52.22Food protein-induced enteropathy
K52.29Other allergic and dietetic gastroenteritis and colitis

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to K52.2:

blockK50-K52
Noninfective enteritis and colitis (K50-K52)
View context instructions
chapterCH11
Diseases of the digestive system (K00-K95)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to K52.2. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Allergy, allergic (reaction) (to)8 unique routes
colitis→K52.2
gastrointestinal(2 variants)
meaning colitis→K52.2
meaning gastroenteritis→K52.2
milk protein(4 variants)
enterocolitis syndrome→K52.2
enteropathy→K52.2
gastroenteritis→K52.2
proctocolitis→K52.2
proctocolitis→K52.2
Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic)5 unique routes
allergic→K52.2(3 variants)
with(2 variants)
food protein-induced enterocolitis syndrome→K52.2
proctocolitis→K52.2
dietetic→K52.2
food hypersensitivity→K52.2
Diarrhea, diarrheal (disease) (infantile) (inflammatory)3 unique routes
allergic→K52.2
dietetic→K52.2
due to
food hypersensitivity→K52.2
Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)6 unique routes
allergic→K52.2(4 variants)
with(3 variants)
food protein-induced enterocolitis syndrome→K52.2
food protein-induced enteropathy→K52.2
FPIES→K52.2
dietetic→K52.2
due to
food hypersensitivity→K52.2
Enteropathy1 unique routes
food protein-induced→K52.2
FPIES (food protein-induced enterocolitis syndrome)1 unique routes
Direct index entry→K52.2
Gastroenteritis (acute) (chronic) (noninfectious)1 unique routes
allergic→K52.2

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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