C78.89

Billable

Secondary malignant neoplasm of other digestive organs

HCC Category Mapping

V28HCC 17 — Metastatic Cancer and Acute Leukemia

0.368

V24HCC 8 — Metastatic Cancer and Acute Leukemia

2.484

ESRDHCC 8 — Metastatic Cancer and Acute Leukemia

0.000

RxHCCHCC 18 — Metastatic Cancer to Lung and Other Respiratory Sites

0.000

What This Code Means

Cancer that has spread to other specific digestive organs (such as stomach, pancreas, or esophagus) from a primary cancer that started elsewhere.

Coding Tips

•This code covers digestive organs not included in C78.4, C78.5, C78.7, or C78.80; review documentation for the specific organ
•Always establish the primary cancer site and code it separately to show the metastatic relationship

Clinical Significance

Secondary malignant neoplasm of other digestive organs captures metastatic disease to specific digestive organs not covered by codes C78.4 through C78.7, such as the stomach, pancreas, esophagus, or gallbladder. These metastatic sites can significantly affect nutrition, digestion, and quality of life, requiring specialized management approaches.

Documentation Requirements

✓Primary cancer site documented and coded separately
✓Specific identification of the digestive organ involved — stomach, pancreas, esophagus, gallbladder, etc.
✓Imaging or pathological confirmation distinguishing metastatic from primary disease
✓Complications — obstruction, hemorrhage, fistula formation
✓Treatment approach and intent — curative versus palliative

Code Also

exocrine pancreatic insufficiency (K86.81)

Commonly Confused Codes

C78.80 — Secondary malignant neoplasm of unspecified digestive organ; use C78.89 when the specific organ IS known C78.7 — Secondary malignant neoplasm of liver; liver metastases have a dedicated code C25.0-C25.9 — Primary malignant neoplasm of pancreas; verify the pancreatic involvement is secondary, not primary C16.0-C16.9 — Primary malignant neoplasm of stomach; differentiate primary gastric cancer from metastatic disease to the stomach

Code Hierarchy

└C78Secondary malignant neoplasm of respiratory and digestive organs └C78.8Secondary malignant neoplasm of other and unspecified digestive organs └C78.89Secondary malignant neoplasm of other digestive organs

└C78.89Secondary malignant neoplasm of other digestive organs