ICD-10 Code C05.1 – Malignant neoplasm of soft palate (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C05.1 – Malignant neoplasm of soft palate
What it is
C05.1 identifies a malignant tumor arising in the soft palate, the movable tissue at the back of the roof of the mouth. Use it when the record documents primary cancer of this site.
Clinical signs
Clinical features may include a visible or ulcerated oral mass, pain, bleeding, dysphagia, or speech changes. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents malignant neoplasm of the soft palate, including primary cancer at that exact anatomic site. It also fits pathology or operative notes that clearly localize the tumor to the soft palate. If the record only says “oral cancer” or gives an unclear site, check documentation before coding.
Do not use for
Do not use C05.1 for benign lesions, dysplasia, or cancers of other oral sites such as the hard palate, tonsil, or lip. If the documentation does not confirm the soft palate as the primary site, check documentation.
Coding tip
Verify the exact anatomic site in the pathology, operative, or oncology note before assigning C05.1.