ICD-10 Code C14.8 – Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C14.8 – Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx
What it is
This code identifies a malignant neoplasm that involves overlapping anatomic sites across the lip, oral cavity, and pharynx. Use it when the primary site cannot be assigned to one specific location.
Clinical signs
Clinical features vary; refer to documentation. Common findings in head and neck cancer may include a visible or palpable mass, ulceration, pain, dysphagia, or persistent oral lesions.
When to use this code
Use C14.8 when the provider documents cancer spanning overlapping sites and does not identify one dominant origin. It is appropriate when the lesion crosses boundaries between the lip, oral cavity, and pharynx. If the record names a single primary site, code that site instead.
Do not use for
Do not use this code for benign, in situ, or metastatic disease without documentation of a primary overlapping malignant neoplasm. If the cancer is clearly limited to one site, check documentation and use the more specific code.
Coding tip
Confirm the exact anatomic wording in the pathology or provider note before assigning C14.8.