ICD-10 Code D10.4 – Benign neoplasm of tonsil (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D10.4 – Benign neoplasm of tonsil
What it is
D10.4 identifies a noncancerous tumor of the tonsil. It indicates benign tissue growth in the tonsillar area, not a malignant neoplasm.
Clinical signs
Clinical features vary; refer to documentation. Patients may have a visible tonsillar mass, throat discomfort, or asymmetry on exam, but findings depend on the lesion and its size.
When to use this code
Use D10.4 when the provider documents a benign neoplasm arising in the tonsil, including a confirmed benign tonsillar mass. Code it from pathology, operative notes, or a clear clinical diagnosis. If the record only says “tonsillar lesion” or “mass,” check documentation.
Do not use for
Do not use this code for malignant tonsil tumors, dysplasia, or unspecified throat masses. Also avoid it when the lesion is documented in another oropharyngeal site.
Coding tip
Verify that the documentation names the tonsil and confirms benign behavior before assigning D10.4.