Neoplasm of uncertain behavior of tongue

This code identifies a tumor of the tongue where the biological behavior cannot be definitively classified as benign or malignant based on current diagnostic information. These neoplasms exhibit some atypical features but lack clear evidence of invasion or metastasis. Further diagnostic evaluation, such as biopsy and histopathological examination, is typically required to determine the definitive nature of the lesion.

Use this code when pathology reports indicate a diagnosis of a neoplasm of uncertain behavior specifically located on the tongue. This applies to initial encounters where the definitive malignant or benign status is still pending or when the final pathology confirms an uncertain behavior. Documentation must clearly specify the tongue as the anatomical site and the uncertain nature of the neoplasm.

• Do not use this code if the pathology definitively states benign or malignant; instead, select the appropriate benign or malignant neoplasm code.
• Ensure the documentation specifies "uncertain behavior" and the anatomical site as the tongue.
• If the uncertain behavior is later clarified as benign or malignant, update the diagnosis accordingly.