K29
ICD-10Non-billable categoryGastritis and duodenitis
Official ICD-10-CM descriptor (FY2026)
Gastritis and duodenitis
K29 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- eosinophilic gastritis or gastroenteritis (K52.81)
- Zollinger-Ellison syndrome (E16.4)
More specific codes under K29
- K29.0Acute gastritiscategory
- K29.2Alcoholic gastritiscategory
- K29.3Chronic superficial gastritiscategory
- K29.4Chronic atrophic gastritiscategory
- K29.5Unspecified chronic gastritiscategory
- K29.6Other gastritiscategory
- K29.7Gastritis, unspecifiedcategory
- K29.8Duodenitiscategory
- K29.9Gastroduodenitis, unspecifiedcategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.