ICD-10 Code D10.3 – Benign neoplasm of other and unspecified parts of mouth (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D10.3 – Benign neoplasm of other and unspecified parts of mouth
What it is
D10.3 identifies a noncancerous growth in mouth structures not named elsewhere in the code set. It is used when the lesion arises in other or unspecified parts of the mouth and documentation supports a benign neoplasm.
Clinical signs
Clinical features vary; refer to documentation. Benign oral neoplasms may appear as a localized mass, lump, or mucosal swelling, sometimes found during dental or oral examination.
When to use this code
Use D10.3 when the provider documents a benign neoplasm in an oral site that is not specifically coded elsewhere, or when the exact oral location is not stated. Confirm that the record clearly indicates benign behavior and that the lesion is in the mouth, not the lip, salivary glands, or other head and neck sites.
Do not use for
Do not use this code for malignant, in situ, or uncertain oral lesions. If the documentation names a more specific oral subsite, code that site instead.
Coding tip
Check the pathology or operative note for both behavior and exact oral location before assigning D10.3.