ICD-10 Code D37.030 – Neoplasm of uncertain behavior of the parotid salivary glands (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D37.030 – Neoplasm of uncertain behavior of the parotid salivary glands
What it is
This code identifies a parotid gland mass whose behavior is uncertain, meaning the record does not confirm whether it is benign or malignant. Use it for the parotid salivary gland specifically, not for other salivary sites.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may describe a parotid lump, painless swelling, facial asymmetry, or an incidental imaging finding, but these findings alone do not establish behavior.
When to use this code
Use D37.030 when the provider documents a neoplasm of uncertain behavior involving the parotid gland and has not assigned a benign or malignant diagnosis. It also fits pathology or imaging reports that describe uncertain, borderline, or indeterminate behavior. If the note only says “mass” or “lesion,” check documentation before coding.
Do not use for
Do not use this code for clearly benign parotid tumors, confirmed malignant salivary gland cancers, or inflammatory salivary conditions. If the site is not the parotid gland, choose the more specific code for that location.
Coding tip
Verify both the anatomic site and the stated behavior in the provider’s documentation before assigning D37.030.