ICD-10 Code C05.8 – Malignant neoplasm of overlapping sites of palate (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C05.8 – Malignant neoplasm of overlapping sites of palate
What it is
C05.8 identifies a malignant tumor of the palate that spans more than one overlapping site. Use it when the record states the cancer involves overlapping areas of the hard or soft palate.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include a visible oral mass, ulceration, pain, bleeding, or difficulty with chewing, swallowing, or speech.
When to use this code
Use this code when the provider documents primary cancer of the palate affecting overlapping anatomic sites, and the record does not support a more specific palatal subsite. It is appropriate for confirmed malignant neoplasm, including pathology or specialist documentation. Check documentation if the site is unclear.
Do not use for
Do not use C05.8 for benign palate lesions, dysplasia, or cancer limited to a single, clearly documented palatal subsite. If the tumor is metastatic rather than primary, code the primary site instead.
Coding tip
Always verify the exact palatal site and whether the lesion overlaps multiple areas before assigning C05.8.