Understanding Gastric Adenocarcinoma: ICD-10 Codes And Diagnosis

What is Gastric Adenocarcinoma?

Gastric adenocarcinoma, also known as stomach cancer, is a type of cancer that develops in the lining of the stomach. It is the most common type of stomach cancer and can spread to other parts of the body if not treated early. Gastric adenocarcinoma typically starts in the mucosa of the stomach and can grow into the deeper layers of the stomach over time.

Code Information

Gastric adenocarcinoma in young adult patients: patterns of care
Gastric adenocarcinoma in young adult patients: patterns of care

The ICD-10 code for gastric adenocarcinoma is C16.0. This code is used to classify and code diagnoses related to stomach cancer in medical records and billing systems.

Diagnostic Related Groups (MS-DRG)

Hone in on Coding for Esophageal Cancer ICD--CM - Medical Coding
Hone in on Coding for Esophageal Cancer ICD–CM – Medical Coding

When gastric adenocarcinoma is diagnosed, it is classified under MS-DRG 286 – Circulatory Disorders Except Acute Myocardial Infarction with Cardiac Catheterization with Major Complication or Comorbidity. This DRG is used for reimbursement purposes and helps healthcare providers understand the severity of the condition.

Convert to ICD-9 Code

ICD--CM Diagnosis Code C
ICD–CM Diagnosis Code C

The equivalent ICD-9 code for gastric adenocarcinoma is 151.0. This code was used prior to the implementation of ICD-10 coding system and is still sometimes referenced in older medical records.

Code History

Gastric Cancer ICD  Code  Power
Gastric Cancer ICD Code Power

Gastric adenocarcinoma has been classified under various ICD codes over the years, reflecting advancements in medical knowledge and diagnostic criteria. The current ICD-10 code for this condition is C16.0, which specifically identifies gastric adenocarcinoma.

Approximate Synonyms

Other terms that may be used interchangeably with gastric adenocarcinoma include stomach cancer, gastric carcinoma, and adenocarcinoma of the stomach. These synonyms all refer to the same type of cancer that affects the stomach lining.

Clinical Information

Gastric adenocarcinoma typically presents with symptoms such as abdominal pain, indigestion, bloating, and unintentional weight loss. It may also cause nausea, vomiting, and difficulty swallowing in later stages. Diagnosis is usually confirmed through imaging tests, biopsies, and blood tests.


The exact cause of gastric adenocarcinoma is not fully understood, but certain risk factors have been identified. These include infection with the Helicobacter pylori bacteria, a history of smoking, a family history of stomach cancer, and a diet high in salted, smoked, or pickled foods.


Common symptoms of gastric adenocarcinoma include persistent abdominal discomfort, bloating, nausea, and unintentional weight loss. Some patients may also experience vomiting, difficulty swallowing, and blood in the stool. Symptoms may vary depending on the location and stage of the cancer.


Diagnosing gastric adenocarcinoma typically involves a combination of imaging tests, such as endoscopy, CT scans, and PET scans, as well as biopsies of the stomach lining. Blood tests may also be used to detect tumor markers associated with stomach cancer.


Treatment for gastric adenocarcinoma may include surgery to remove the tumor, chemotherapy, radiation therapy, targeted therapy, and immunotherapy. The choice of treatment depends on the stage of the cancer, the patient’s overall health, and whether the cancer has spread to other parts of the body.


Gastric adenocarcinoma is a serious type of cancer that affects the lining of the stomach. Early diagnosis and treatment are crucial for improving outcomes and prolonging survival. Understanding the ICD codes, diagnostic criteria, and treatment options for this condition can help healthcare providers deliver appropriate care to patients with gastric adenocarcinoma.


Q: What is the prognosis for patients with gastric adenocarcinoma?
A: The prognosis for gastric adenocarcinoma varies depending on the stage of the cancer at diagnosis and the patient’s overall health. Early detection and treatment can improve survival rates.
Q: Are there any preventive measures for gastric adenocarcinoma?
A: While the exact cause of gastric adenocarcinoma is unknown, certain lifestyle changes such as quitting smoking, maintaining a healthy diet

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