Detecting Cancer: ICD-10 Coding For Screening Malignant Neoplasm Of Colon

What is Malignant Neoplasm of Colon ICD-10?

Malignant neoplasm of colon ICD-10 refers to cancerous growths in the colon that are coded using the International Classification of Diseases, 10th Edition (ICD-10). This coding system is used by healthcare providers to accurately identify and classify various diseases and conditions for billing and statistical purposes.

Code Information

ICD--CM Diagnosis Code Z
ICD–CM Diagnosis Code Z

The ICD-10 code for malignant neoplasm of colon is C18.9. This code specifically refers to cancerous tumors in the colon, which is a part of the large intestine.

Diagnostic Related Groups (MS-DRG)

Screen Your Colorectal Cancer Coding - AAPC Knowledge Center
Screen Your Colorectal Cancer Coding – AAPC Knowledge Center

For patients diagnosed with malignant neoplasm of colon, they may fall into different Diagnostic Related Groups (MS-DRG) depending on factors such as severity of illness, treatment received, and comorbidities. The specific MS-DRG code for colon cancer is 329.

Convert to ICD-9 Code

Prior to the implementation of the ICD-10 coding system, malignant neoplasm of colon was coded using the ICD-9 system. The equivalent code in ICD-9 for colon cancer is 153.9.

Code History

The ICD-10 code for malignant neoplasm of colon has undergone several revisions over the years to accurately reflect advancements in medical knowledge and technology. Healthcare providers must stay updated with the latest coding guidelines to ensure accurate coding and billing.

Approximate Synonyms

Some approximate synonyms for malignant neoplasm of colon include colon cancer, colorectal cancer, and gastrointestinal cancer. These terms are often used interchangeably to refer to cancerous growths in the colon.

Clinical Information

Colon cancer is a type of cancer that begins in the colon, which is a part of the digestive system. It typically starts as a small, noncancerous polyp that can develop into cancer over time. Symptoms of colon cancer may include changes in bowel habits, blood in the stool, abdominal pain, and unexplained weight loss.


The exact cause of colon cancer is not known, but certain risk factors may increase the likelihood of developing the disease. These risk factors include age, family history of colon cancer, personal history of inflammatory bowel disease, and unhealthy lifestyle habits such as smoking and a diet high in red meat.


Common symptoms of malignant neoplasm of colon include persistent abdominal discomfort, changes in bowel habits, blood in the stool, unexplained weight loss, and fatigue. It is important to consult a healthcare provider if you experience any of these symptoms to receive a proper diagnosis and treatment.


Diagnosing malignant neoplasm of colon typically involves a combination of physical examinations, imaging tests such as colonoscopy and CT scans, and laboratory tests including blood tests and biopsy. Early detection of colon cancer is crucial for successful treatment and prognosis.


Treatment options for malignant neoplasm of colon may vary depending on the stage of cancer, overall health of the patient, and other individual factors. Common treatment modalities include surgery to remove the cancerous tumor, chemotherapy, radiation therapy, and targeted therapy. A multidisciplinary approach involving healthcare providers from different specialties is often recommended for comprehensive care.


In conclusion, malignant neoplasm of colon ICD-10 is a serious condition that requires prompt diagnosis and appropriate treatment. By understanding the coding, diagnostic criteria, and treatment options for colon cancer, healthcare providers can effectively manage this disease and improve patient outcomes.


1. What are the risk factors for developing malignant neoplasm of colon?

2. How is colon cancer diagnosed?

3. What are the treatment options for colon cancer?

4. Can colon cancer be prevented?

5. What is the prognosis for patients with malignant neoplasm of colon?

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