C78: Secondary malignant neoplasm of respiratory and digestive organs
C78.4: Secondary malignant neoplasm of small intestine
The tissue in the body is made up of cells. With cancer, the cells multiply uncontrollably, which leads to a malignant neoplasm (abnormal growth of tissue) developing. The cancer cells can destroy the healthy tissue and spread throughout the body.
The cancer cells have spread in your body and multiplied at another site. These are called metastases.
The small intestine is the longest part of the gastrointestinal tract. The small intestine consists of 3 sections. The 1st section begins immediately after the stomach and is called the duodenum. The gallbladder and the pancreas secrete the digestive juices in this section. The jejunum and ileum sections come next. The nutrients are absorbed into the blood from the food in the small intestine. The small intestine is followed by the large intestine.
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If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.