Malignant neoplasm of left choroid

This code signifies a cancerous tumor originating in the choroid layer of the left eye. The choroid is a vascular layer between the retina and the sclera, providing oxygen and nutrients to the outer retina. Malignant neoplasms in this location are typically melanomas.

Apply this code when documentation explicitly states a primary malignant neoplasm of the left choroid. This diagnosis is often confirmed through ophthalmoscopy, ultrasound, fluorescein angiography, and biopsy. Use this code for the initial diagnosis and treatment of such a malignancy.

• Ensure laterality is clearly documented as "left" to support this specific code.
• Distinguish between primary (originating in the choroid) and secondary (metastatic to the choroid) malignancies; this code is for primary.
• Do not confuse with benign neoplasms or other malignant eye structures (e.g., retina, ciliary body).