ICD-10 Code D37.039 – Neoplasm of uncertain behavior of the major salivary glands, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D37.039 – Neoplasm of uncertain behavior of the major salivary glands, unspecified
What it is
This code identifies a salivary gland mass whose behavior is uncertain, meaning pathology has not confirmed it as clearly benign or malignant. Use it when the major salivary gland is involved but the specific gland is not documented.
Clinical signs
Clinical features vary; refer to documentation. Patients may have a painless swelling, a palpable mass, facial asymmetry, or symptoms related to local pressure, but these findings are not specific.
When to use this code
Use D37.039 when the record documents a neoplasm of uncertain behavior in a major salivary gland and the site is not further specified. It may also fit when pathology or provider wording indicates uncertain biologic behavior, but the exact gland is not named.
Code from the final documented diagnosis, not from imaging suspicion alone. If the note later identifies a specific major salivary gland or a malignant process, update coding to match the confirmed documentation.
Do not use for
Do not use this code for benign, malignant, or metastatic salivary gland tumors. Also avoid it when the record names a specific major salivary gland and a more specific code is available.
Coding tip
Check pathology and the provider’s final assessment; uncertain behavior must be documented, and unspecified should be used only when the gland site is not stated.