ICD Code C79.89

ICD code C79.89 is secondary cancer (metastasis) that has spread to other specific sites in the body not listed elsewhere.

1. Documented history of a primary malignant neoplasm at a different anatomical site

2. Clinical, radiological, or pathological evidence of metastatic spread to a site not specifically listed elsewhere in the ICD coding system

3. Absence of a primary malignant neoplasm at the secondary site

4. Symptoms or findings consistent with metastatic disease, such as unexplained pain, mass, or organ dysfunction at the secondary site

5. Confirmation that the secondary site is not included in more specific secondary neoplasm codes

6. Supporting diagnostic imaging or biopsy confirming malignancy at the secondary site

Relevant CPT codes that may be used to treat ICD code C79.89 include:

- 96413: Chemotherapy administration, intravenous infusion technique; up to 1 hour, single or initial substance/drug

- 96415: Chemotherapy administration, intravenous infusion technique; each additional hour

- 96417: Chemotherapy administration, intravenous infusion technique; each additional sequential infusion (different substance/drug), up to 1 hour

- 96365: Intravenous infusion, for therapy, prophylaxis, or diagnosis (specify substance or drug); initial, up to 1 hour

- 96366: Intravenous infusion, for therapy, prophylaxis, or diagnosis; each additional hour

- 99221-99223: Initial hospital inpatient care, per day, for the evaluation and management of a patient

- 99231-99233: Subsequent hospital care, per day, for the evaluation and management of a patient

- 99291: Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes

- 77261-77263: Therapeutic radiology treatment planning

- 77401-77412: Radiation treatment delivery

CPT code selection should be based on the specific treatment modality and clinical scenario associated with ICD code C79.89.

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