Malignant neoplasm of stomach, unspecified site

This code signifies a malignant tumor originating in the stomach where the specific anatomical location within the stomach (e.g., cardia, fundus, pylorus) is not documented. It represents an unconfirmed or unspecified primary gastric malignancy.

This code is appropriate when documentation confirms a diagnosis of gastric adenocarcinoma or other primary malignant neoplasm of the stomach, but the precise subsite is not specified by the physician. It should be used when the medical record does not provide enough detail to assign a more specific ICD-9-CM code for gastric cancer.

• Avoid using this code if a more specific anatomical site within the stomach is documented (e.g., cardia, fundus, body, pylorus, lesser/greater curvature).
• Query the physician for clarification of the tumor's specific location if possible, to allow for more precise coding.
• This code is for primary gastric malignancy; do not use for metastatic disease to the stomach.