ICD-10 Code C08.0 – Malignant neoplasm of submandibular gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C08.0 – Malignant neoplasm of submandibular gland
What it is
This code identifies a malignant tumor arising in the submandibular salivary gland, located beneath the jaw. Use it when documentation states primary cancer of that gland.
Clinical signs
Common findings include a persistent lump under the jaw, swelling, or pain in the submandibular region. Clinical features vary; refer to documentation and pathology when available.
When to use this code
Use C08.0 when the provider documents primary malignant neoplasm of the submandibular gland, including confirmed cancer of that gland. It is also appropriate when the record clearly identifies the submandibular gland as the site of origin. If the note only says “salivary gland cancer” without a specific site, check documentation before assigning this code.
Do not use for
Do not use this code for benign salivary gland tumors, infections, or nonspecific neck masses. If the malignancy is metastatic to the submandibular gland rather than primary there, check documentation.
Coding tip
Verify the exact gland named in the record, because salivary gland cancers are coded by specific site.