Malignant neoplasm of overlapping sites of palate

This code signifies a cancerous tumor that spans across two or more adjacent subsites of the palate, such as extending from the hard palate to the soft palate, or involving both the uvula and soft palate. It indicates that the primary origin cannot be definitively assigned to a single anatomical subsite within the palate.

Use this code when documentation clearly states a malignant neoplasm involving multiple contiguous subsites of the palate, and the precise point of origin cannot be localized to one specific area. This is appropriate when the tumor crosses boundaries of distinct palatal regions.

• Ensure documentation explicitly states involvement of "overlapping" or "contiguous" sites within the palate.
• Do not use this code if the tumor is confined to a single subsite (e.g., hard palate, soft palate, uvula); instead, use the specific subsite code.
• Always code the histology (morphology) using an appropriate ICD-O-3 code, which will be appended to the diagnosis code.