ICD-10 Code D37.04 – Neoplasm of uncertain behavior of the minor salivary glands (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D37.04 – Neoplasm of uncertain behavior of the minor salivary glands
What it is
D37.04 identifies a minor salivary gland mass whose behavior is uncertain on pathology or documentation. Use it when the lesion is not clearly benign or malignant.
Clinical signs
Findings may include a localized oral or mucosal mass, swelling, or an incidental lesion on exam or imaging. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents a neoplasm of uncertain behavior arising from a minor salivary gland, such as glands in the lip, palate, or oral cavity. It fits cases awaiting definitive pathology or where the report states uncertain or borderline behavior. Code the documented site precisely when available.
Do not use for
Do not use D37.04 for clearly benign lesions, confirmed malignant salivary gland tumors, or inflammatory salivary disorders. Check documentation if the site is not specifically a minor salivary gland.
Coding tip
Match the code only to the documented gland site and tumor behavior; if either is unclear, query the provider.