ICD10
ICD-10 Code C16: Malignant neoplasm of stomach
Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Neoplasms (C00-D49).
When is it used?
- May be used when a clinician documents malignant neoplasm of stomach in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
2Neoplasms (C00-D49)
block
C00-C96Malignant neoplasms
block
C00-C75Malignant neoplasms, stated or presumed to be primary (of specified sites), and certain specified histologies, except neuroendocrine, and of lymphoid, hematopoietic and related tissue
block
C15-C26Malignant neoplasms of digestive organs
currentC15-C26
Official coding notes
Applicable to
- code to identify:
- alcohol abuse and dependence (F10.-)
Excludes2 (may code together if documented)
- malignant carcinoid tumor of the stomach (C7A.092)
Use additional code
- code to identify:
- alcohol abuse and dependence (F10.-)
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
OncologistGeneral PhysicianGastroenterologist
Related codes
C16.0Malignant neoplasm of cardiacodeC16.1Malignant neoplasm of fundus of stomachcodeC16.2Malignant neoplasm of body of stomachcodeC16.3Malignant neoplasm of pyloric antrumcodeC16.4Malignant neoplasm of pyloruscodeC16.5Malignant neoplasm of lesser curvature of stomach, unspecifiedcodeC16.6Malignant neoplasm of greater curvature of stomach, unspecifiedcodeC16.8Malignant neoplasm of overlapping sites of stomachcodeC16.9Malignant neoplasm of stomach, unspecifiedcode
Sibling codes
C15Malignant neoplasm of esophagusC17Malignant neoplasm of small intestineC18Malignant neoplasm of colonC19Malignant neoplasm of rectosigmoid junctionbillableC20Malignant neoplasm of rectumbillableC21Malignant neoplasm of anus and anal canalC22Malignant neoplasm of liver and intrahepatic bile ductsC23Malignant neoplasm of gallbladderbillableC24Malignant neoplasm of other and unspecified parts of biliary tractC25Malignant neoplasm of pancreasC26Malignant neoplasm of other and ill-defined digestive organs
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
C16
Replacement codes
C16.0 — Malignant neoplasm of cardiaC16.1 — Malignant neoplasm of fundus of stomachC16.2 — Malignant neoplasm of body of stomachC16.3 — Malignant neoplasm of pyloric antrumC16.4 — Malignant neoplasm of pylorusC16.5 — Malignant neoplasm of lesser curvature of stomach, unspecifiedC16.6 — Malignant neoplasm of greater curvature of stomach, unspecifiedC16.8 — Malignant neoplasm of overlapping sites of stomachC16.9 — Malignant neoplasm of stomach, unspecified
Common synonyms
Malignant neoplasm of stomach
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.