Short answer · Medically reviewed summary · Last updated: 2026-05-08

The primary ICD-10 code for malignant neoplasm of the stomach is C16, while the corresponding ICD-9 code is 151. These codes are used globally to classify stomach cancer in medical records, billing, and clinical research databases. What are the specific ICD-10 sub-classifications for stomach cancer? While C16 is the general category for stomach cancer, clinicians use more specific sub-codes to identify the exact anatomical location of the tumor.

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ICD10 code of Stomach cancer and ICD9 code

ICD-10 and ICD-9 codes for Stomach cancer, with classification details for clinicians, coders and patients.

ICD9 and ICD10 codes of Stomach cancer

The primary ICD-10 code for malignant neoplasm of the stomach is C16, while the corresponding ICD-9 code is 151. These codes are used globally to classify stomach cancer in medical records, billing, and clinical research databases.



What are the specific ICD-10 sub-classifications for stomach cancer?


While C16 is the general category for stomach cancer, clinicians use more specific sub-codes to identify the exact anatomical location of the tumor. These include C16.0 for the cardia, C16.1 for the fundus, C16.2 for the body, C16.3 for the antrum, and C16.4 for the pylorus. Identifying the precise location of stomach cancer is essential for determining appropriate surgical approaches and treatment protocols.



How is stomach cancer categorized in medical coding?


Medical coding for stomach cancer relies on the site of the primary lesion. Accurate coding is vital for tracking the prevalence of the disease, which affects approximately 1 in 111 people in the United States over their lifetime. At DiseaseMaps.org, 13 community members have shared their experiences, providing a unique perspective on navigating the complexities of a stomach cancer diagnosis and the associated clinical documentation.



What factors contribute to the diagnosis of stomach cancer?


Diagnosis often involves a combination of imaging and tissue analysis. Healthcare providers typically use the following methods to confirm stomach cancer:



  • Upper Endoscopy (EGD): The primary method to visualize the stomach lining and obtain biopsies.

  • Endoscopic Ultrasound: Used to determine the depth of tumor invasion into the stomach wall.

  • CT Scans: Utilized for staging to check for potential spread to distant organs.

  • HER2 Testing: Specifically checked in metastatic stomach cancer to determine if targeted therapy is an option.



Next steps



  • Consult with a gastroenterologist or an oncologist to interpret your specific pathology reports and ICD coding.

  • Review your medical records to ensure your stomach cancer diagnosis is accurately documented for insurance and care coordination.

  • Connect with the 13 members of the DiseaseMaps community who are navigating similar journeys with stomach cancer.



Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment from a qualified healthcare provider.



References



  • World Health Organization (WHO): ICD-10 Version: 2019.

  • National Cancer Institute (NCI): Stomach (Gastric) Cancer—Patient Version.

  • American Cancer Society: Cancer Facts & Figures 2024.

  • NIH National Library of Medicine: Coding and Classification of Neoplasms.

Author: DiseaseMaps Editorial Team
Reviewed against authoritative medical sources (NIH GARD, Orphanet, OMIM)
Last updated: 2026-05-08
Sources cited: World Health Organization (WHO): ICD-10 Version: 2019. · National Cancer Institute (NCI): Stomach (Gastric) Cancer—Patient Version. · American Cancer Society: Cancer Facts & Figures 2024. · NIH National Library of Medicine: Coding and Classification of Neoplasms.
Medical disclaimer: This information does not substitute professional medical advice. Always consult your doctor before making health decisions.
Source: DiseaseMaps.org
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