Malignant neoplasm of right acoustic nerve

This code signifies a cancerous tumor originating from the eighth cranial nerve (vestibulocochlear nerve) on the right side of the head. This nerve is responsible for transmitting sound and balance information from the inner ear to the brain. Such a neoplasm is typically a schwannoma, though other malignant types are possible.

Apply this code when documentation confirms a primary malignant neoplasm affecting the right acoustic nerve. This diagnosis is often established through imaging studies (e.g., MRI) and biopsy results. Use this code for the initial diagnosis and subsequent encounters related to the malignant nature of the tumor.

• Ensure laterality (right) is clearly documented.
• Distinguish between benign (D33.3) and malignant acoustic neuromas.
• Sequence this code as the primary diagnosis when the malignant neoplasm is the reason for the encounter.