What ICD-10 Codes are used for Chemotherapy
ICD-10 codes, which stand for International Classification of Diseases, 10th Edition, are utilized to classify and code medical conditions, diseases, and procedures for statistical and billing purposes. Specific ICD-10 codes are assigned for chemotherapy to ensure that the treated medical condition is accurately represented.
Here are the commonly used chemotherapy ICD-10 codes:
- C16.9 - Malignant neoplasm of the stomach, unspecified: This code is used when a patient undergoes chemotherapy for stomach cancer. Stomach cancer, or gastric cancer, often requires chemotherapy as part of the treatment plan.
- C18.9 - Malignant neoplasm of colon, unspecified: Patients with colon cancer may receive chemotherapy as part of their treatment. This code is used when the location within the colon is not specified.
- C34.90 - Malignant neoplasm of bronchus or lung, unspecified: Lung cancer is a common target for chemotherapy. This code is used when the specific location within the lungs is not identified.
- C50.912 - Malignant neoplasm of unspecified site of the right female breast: Breast cancer is often treated with chemotherapy. This code is used when the specific site in the right breast is not specified.
- C61 - Malignant neoplasm of the prostate: Prostate cancer may be managed with chemotherapy. This code is applied when a patient is receiving chemotherapy for prostate cancer.
- C67.9 - Malignant neoplasm of bladder, unspecified: Chemotherapy may be part of the treatment plan for bladder cancer. This code is used when the exact location within the bladder is not specified.
- C73 - Malignant neoplasm of the thyroid gland: Thyroid cancer may require chemotherapy as part of the treatment. This code is applied when a patient undergoes chemotherapy for thyroid gland malignancy.
- C82.00 - Follicular lymphoma, unspecified, unspecified site: Chemotherapy is a standard treatment for various types of lymphomas, including follicular lymphoma. This code is used when the specific site is not specified.
- C91.10 - Chronic lymphocytic leukemia of B-cell type not achieving remission: Patients with chronic lymphocytic leukemia may undergo chemotherapy when remission is not achieved. This code is used in such cases.
- C78.00 - Secondary malignant neoplasm of lung, unspecified: If cancer has metastasized to the lungs from another primary site, chemotherapy for the lung metastasis is represented by this code.
These ICD-10 codes are crucial in accurately documenting and billing for chemotherapy treatments, ensuring proper reimbursement, and contributing to comprehensive healthcare data analysis.

