Malignant neoplasm of right ciliary body

This code signifies a cancerous tumor originating in the ciliary body of the right eye. The ciliary body is a part of the uvea, located behind the iris, responsible for aqueous humor production and accommodation. This malignancy can affect vision and potentially spread to other ocular structures or distant sites.

Use this code when documentation clearly indicates a primary malignant neoplasm located specifically in the right ciliary body. This diagnosis is typically established through ophthalmic examination, imaging (e.g., ultrasound, MRI), and often confirmed by biopsy.

• Always specify laterality (right vs. left) for ciliary body neoplasms; use C69.42 for the left ciliary body.
• Distinguish between primary malignant neoplasms and secondary (metastatic) neoplasms, which are coded differently.
• Ensure documentation supports the malignancy, not just a benign tumor or cyst of the ciliary body.