ICD-10 codes for Gastritis
Gastritis is coded primarily under K29.70, K29.00, K29.60 in the ICD-10-CM (Clinical Modification) classification. Top-level categories include K29 (Gastritis and duodenitis). The 2025 ICD-10-CM code set includes 28 codes related to gastritis, of which 18 are billable (specific enough to appear on a medical claim).
Gastritis is stomach lining inflammation. ICD-10-CM codes for gastritis and duodenitis fall under K29. K29.70 (gastritis, unspecified, without bleeding) is one of the most commonly used codes. Subcodes specify acute, chronic, atrophic, alcoholic, and Helicobacter pylori associated gastritis, and whether bleeding is present.
Total Codes
28
Billable Codes
18
Categories
1
SNOMED CT Concepts
25+
Top 12 Relevant ICD-10 Codes
The codes most commonly assigned to gastritis, ranked by primary-match status, billable status, and specificity. Tap a code to see its full ICD-10 detail page.
K29.00Acute gastritis without bleeding
K29.60Other gastritis without bleeding
K29.70Gastritis, unspecified, without bleeding
K29.80Duodenitis without bleeding
K29.01Acute gastritis with bleeding
K29.20Alcoholic gastritis without bleeding
K29.21Alcoholic gastritis with bleeding
K29.30Chronic superficial gastritis without bleeding
K29.31Chronic superficial gastritis with bleeding
K29.40Chronic atrophic gastritis without bleeding
K29.41Chronic atrophic gastritis with bleeding
K29.50Unspecified chronic gastritis without bleeding
Primary Code Categories
These are the top-level ICD-10-CM categories for gastritis. Click any code to see all specific subcodes within that group.
Billable / Specific Codes (18)
Specific ICD-10-CM codes that can be reported on medical claims for gastritis.
K29.00Acute gastritis without bleeding
K29.01Acute gastritis with bleeding
K29.20Alcoholic gastritis without bleeding
K29.21Alcoholic gastritis with bleeding
K29.30Chronic superficial gastritis without bleeding
K29.31Chronic superficial gastritis with bleeding
K29.40Chronic atrophic gastritis without bleeding
K29.41Chronic atrophic gastritis with bleeding
K29.50Unspecified chronic gastritis without bleeding
K29.51Unspecified chronic gastritis with bleeding
K29.60Other gastritis without bleeding
K29.61Other gastritis with bleeding
K29.70Gastritis, unspecified, without bleeding
K29.71Gastritis, unspecified, with bleeding
K29.80Duodenitis without bleeding
K29.81Duodenitis with bleeding
K29.90Gastroduodenitis, unspecified, without bleeding
K29.91Gastroduodenitis, unspecified, with bleeding
Cross-Mappings to Other Standards
ICD-10-CM codes for gastritis link to several adjacent terminologies. These mappings are precomputed from official sources (NLM RxNav, UMLS Metathesaurus, SNOMED CT International) and served via AutoICD's reference and translate APIs.
SNOMED CT
25+ concepts mapped from this code group. Concept IDs include 1086791000119100, 196740009, 22304002, 235654003, ....
Browse SNOMED CT directoryUMLS Metathesaurus
25+ CUIs indexed. Sample: C0267166, C0149518, C2887659, C2887660, ....
Browse UMLS directoryICD-11
ICD-11 (WHO 2022) classifies many of these conditions under different chapter and stem-code structures. Use the converter to see specific ICD-10 to ICD-11 mappings.
Open ICD-10 to ICD-11 converterFrequently Asked Questions
What is the ICD-10 code for gastritis?
The primary ICD-10-CM codes for gastritis are K29.70, K29.00, K29.60. Across all sub-categories, 28 codes are grouped under gastritis, with 18 marked as billable (specific enough for a medical claim).
How many ICD-10 codes are there for gastritis?
There are 28 ICD-10-CM codes related to gastritis. Of these, 18 are billable specific codes and 10 are non-billable header categories that organize the specific codes underneath them. Header codes cannot be reported on a claim by themselves.
Is there a billable ICD-10 code for gastritis?
Yes. 18 of the 28 ICD-10-CM codes for gastritis are billable. Common examples include K29.00 (Acute gastritis without bleeding); K29.01 (Acute gastritis with bleeding); K29.20 (Alcoholic gastritis without bleeding). Code to the highest level of specificity supported by the documentation.
Which gastritis ICD-10 code should I use for billing?
The most commonly used billable codes for gastritis include: K29.00 (Acute gastritis without bleeding); K29.01 (Acute gastritis with bleeding); K29.20 (Alcoholic gastritis without bleeding). The correct code depends on the documented clinical presentation, including any complications, episode (acute / chronic), and laterality where applicable. Always code to the highest level of specificity supported by the clinical documentation.
Is K29.70 a billable ICD-10 code?
Yes, K29.70 (Gastritis, unspecified, without bleeding) is a billable / specific ICD-10-CM code that can be reported on insurance claims.
What are the SNOMED CT concepts for gastritis?
The ICD-10 codes for gastritis map to at least 25 SNOMED CT concepts. Examples of SNOMED CT concept IDs in this group include 1086791000119100, 196740009, 22304002, 235654003, 25458004. SNOMED CT is a clinical terminology used in electronic health records; AutoICD's coding API returns SNOMED CT IDs alongside each ICD-10 code via the include_snomed=true flag.
What UMLS Concept Unique Identifiers (CUIs) cover gastritis?
The ICD-10 codes for gastritis are linked to at least 25 UMLS CUIs in the National Library of Medicine's Metathesaurus. Sample CUIs include C0267166, C0149518, C2887659, C2887660, C0156076. UMLS CUIs unify the same concept across SNOMED CT, ICD-10, ICD-11, RxNorm, MeSH, and dozens of other source vocabularies.
What are other names for gastritis in ICD-10?
Gastritis may also be referred to as: gastritis, stomach inflammation, acute gastritis, chronic gastritis, duodenitis. The same ICD-10-CM codes apply regardless of which term appears in the clinical documentation. Synonyms are surfaced by AutoICD's NER pass and mapped to the canonical ICD-10 family above.
Continue Browsing
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.