Malig neoplasm of anterior two-thirds of tongue, part unsp

This code signifies a cancerous tumor located in the front two-thirds of the tongue, where the specific sub-location (e.g., dorsal, ventral, lateral border) is not documented. This area extends from the tip of the tongue back to the circumvallate papillae. It represents a primary malignancy originating in the lingual tissue.

Apply this code when documentation confirms a malignant neoplasm of the anterior two-thirds of the tongue, but the precise part within that region is not specified by the clinician. This is appropriate when the pathology report or operative note confirms malignancy and location, but lacks further anatomical detail within the anterior tongue.

• Do not use this code if a more specific sub-site of the anterior two-thirds of the tongue (e.g., tip, dorsal surface) is documented.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter, unless treatment is directed at a metastatic site.
• Ensure the documentation clearly states "malignant neoplasm" and specifies the anterior two-thirds of the tongue without further detail.