Neoplasm of uncertain behavior of pineal gland

This code signifies a tumor of the pineal gland that has not been definitively classified as benign or malignant based on current diagnostic information. It indicates that the biological behavior of the neoplasm is currently indeterminate. This diagnosis is often made when biopsy results are inconclusive or further evaluation is pending.

Use this code when pathology reports describe a pineal gland tumor as "uncertain behavior," "borderline," or "indeterminate." It is appropriate when there is suspicion of a neoplastic process in the pineal gland, but definitive malignancy or benignity cannot yet be established. Documentation should clearly state the uncertain nature of the pineal gland mass.

• Do not use this code if the pathology definitively identifies the neoplasm as benign (e.g., pineal cyst) or malignant (e.g., pineoblastoma).
• Ensure documentation specifies the pineal gland as the anatomical site; otherwise, a more general "neoplasm of uncertain behavior of endocrine gland, unspecified" may be appropriate.
• Sequence this code as the primary diagnosis when the uncertain pineal neoplasm is the reason for the encounter or admission.