ICD Code C78.00

ICD code C78.00 is secondary cancer that has spread to the lung, but the specific lung location is not specified.

1. Patient has a confirmed diagnosis of a malignant neoplasm (cancer) originating from a primary site other than the lung.

2. Evidence of metastatic spread to the lung is present, as determined by imaging studies (e.g., CT, MRI, PET scan) or pathology reports.

3. The specific lung (right, left, or bilateral) involved is not identified or documented in the medical record.

4. No clinical or diagnostic evidence indicates that the lung is the primary site of malignancy.

5. Symptoms may include cough, hemoptysis, chest pain, or dyspnea, but these are secondary to metastatic disease.

6. Documentation supports that the lung involvement is due to metastasis from an unspecified primary cancer site.

Relevant CPT codes that may be used to treat ICD code C78.00 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

- 96372: Therapeutic, prophylactic, or diagnostic injection (specify substance or drug); subcutaneous or intramuscular

- 77261–77263: Radiation therapy planning

- 77401–77412: Radiation treatment delivery

- 32601–32609: Thoracoscopy, diagnostic and therapeutic procedures

- 31622–31646: Bronchoscopy with or without biopsy

- 32408: Core needle biopsy, lung or mediastinum

- 99221–99223: Initial hospital 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

CPT code selection should be based on the specific treatment or procedure performed for ICD code C78.00.

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