ICD-10-CM
ICD-10 code for Duodenitis: K29.80
The ICD-10-CM index points "Duodenitis" to K29.80, Duodenitis without bleeding. K29.80 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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Index subterms
A header groups codes and is not billed. A billable code is one you can report.
More specific codes in K29
A header groups codes and is not billed. A billable code is one you can report.
- K29Gastritis and duodenitisHeader
- K29.0Acute gastritisHeader
- K29.00Acute gastritis without bleedingBillable
- K29.01Acute gastritis with bleedingBillable
- K29.2Alcoholic gastritisHeader
- K29.20Alcoholic gastritis without bleedingBillable
- K29.21Alcoholic gastritis with bleedingBillable
- K29.3Chronic superficial gastritisHeader
- K29.30Chronic superficial gastritis without bleedingBillable
- K29.31Chronic superficial gastritis with bleedingBillable
- K29.4Chronic atrophic gastritisHeader
- K29.40Chronic atrophic gastritis without bleedingBillable
- K29.41Chronic atrophic gastritis with bleedingBillable
- K29.5Unspecified chronic gastritisHeader
- K29.50Unspecified chronic gastritis without bleedingBillable
- K29.51Unspecified chronic gastritis with bleedingBillable
- K29.6Other gastritisHeader
- K29.60Other gastritis without bleedingBillable
- K29.61Other gastritis with bleedingBillable
- K29.7Gastritis, unspecifiedHeader
- K29.70Gastritis, unspecified, without bleedingBillable
- K29.71Gastritis, unspecified, with bleedingBillable
- K29.8DuodenitisHeader
- K29.80Duodenitis without bleedingBillable
- K29.81Duodenitis with bleedingBillable
- K29.9Gastroduodenitis, unspecifiedHeader
- K29.90Gastroduodenitis, unspecified, without bleedingBillable
- K29.91Gastroduodenitis, unspecified, with bleedingBillable
Excludes1
Excludes1 means these codes are not reported together.
From K29. A note on a category applies to every code under it.
Related conditions
Related pages
- K29.80 code detailsNotes, nearby codes, CMS-HCC group
- Category K29Every code under it
- Chapter 11Diseases of the digestive system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Duodenitis?
The ICD-10-CM index points "Duodenitis" to K29.80, Duodenitis without bleeding. K29.80 is a billable code.
Is K29.80 billable?
Yes. K29.80 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to K29.80?
The CDC tabular list gives 2 Excludes1 notes (not coded together) for K29.80 and the categories above it. They are listed on this page.
What chapter is K29.80 in?
Chapter 11. Diseases of the digestive system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.