ICD-10 Code D37.03 – Neoplasm of uncertain behavior of the major salivary glands (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D37.03 – Neoplasm of uncertain behavior of the major salivary glands
What it is
This code identifies a tumor in a major salivary gland whose behavior is uncertain. Use it when pathology or clinical documentation does not clearly confirm benign or malignant status.
Clinical signs
Clinical features vary; refer to documentation. Patients may have a salivary gland mass, swelling, pain, or facial asymmetry, but these findings are not specific to this code.
When to use this code
Use D37.03 when the provider documents a neoplasm of uncertain behavior involving a major salivary gland, such as the parotid, submandibular, or sublingual gland. Apply it when the record does not support a definitive benign or malignant diagnosis. Check documentation if the site is unclear.
Do not use for
Do not use this code for clearly benign or malignant salivary gland tumors. If the lesion is described as metastatic, inflammatory, or non-neoplastic, choose the more specific diagnosis.
Coding tip
Confirm both the gland site and the “uncertain behavior” wording before assigning D37.03.