Neoplasm of uncertain behavior of major salivary glands

This code signifies a tumor originating in one of the major salivary glands (parotid, submandibular, sublingual) where the pathologist cannot definitively classify it as benign or malignant based on current microscopic examination. It indicates that the biological behavior of the neoplasm is currently indeterminate.

Use this code when pathology reports describe a salivary gland tumor as "uncertain behavior," "borderline," or "of undetermined malignant potential." Documentation must clearly state the major salivary gland origin and the uncertain nature of the tumor's behavior.

• Do not use this code if the pathology definitively identifies the tumor as benign (e.g., pleomorphic adenoma) or malignant (e.g., mucoepidermoid carcinoma).
• Ensure the documentation specifies a major salivary gland; minor salivary gland tumors of uncertain behavior are coded differently.
• If subsequent pathology clarifies the tumor's behavior, update the diagnosis accordingly.