ICD-10 Code D16.5 – Benign neoplasm of lower jaw bone (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D16.5 – Benign neoplasm of lower jaw bone
What it is
D16.5 identifies a noncancerous tumor arising in the lower jaw bone, or mandible. It is used when documentation states a benign neoplasm of the jaw bone rather than a cyst, infection, or malignant process.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include a localized jaw mass, swelling, pain, tooth displacement, or incidental imaging evidence of a well-defined bony lesion.
When to use this code
Use D16.5 when the provider documents a benign neoplasm specifically involving the lower jaw bone. Apply it for confirmed mandible lesions described as benign on pathology, imaging, or specialist assessment. If the record only says “jaw lesion” or the site is unclear, check documentation before coding.
Do not use for
Do not use this code for malignant tumors, odontogenic cysts, inflammatory bone disease, or unspecified oral soft tissue masses. If the lesion is not clearly in the lower jaw bone, check documentation.
Coding tip
Verify both benign behavior and mandible location in the record before assigning D16.5.