D37.039
BillableNeoplasm of uncertain behavior of the major salivary glands, unspecified
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is D37.039 an HCC code?
No. D37.039 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
D37.039 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of the major salivary glands, unspecified. This code describes a tumor or growth in the major salivary glands (parotid, submandibular, or sublingual glands) that cannot be definitively classified as either benign or malignant based on available pathology findings. The behavior and potential for spread are uncertain and require further evaluation or monitoring. D37.039 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (d37-d48).
D37.039 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Use this code only when pathology results specifically indicate 'uncertain behavior' or 'borderline' findings; do not use if the tumor is confirmed as benign (D11) or malignant (C07-C08).
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for D37.039 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when pathology results specifically indicate 'uncertain behavior' or 'borderline' findings; do not use if the tumor is confirmed as benign (D11) or malignant (C07-C08)
- •Ensure documentation specifies which major salivary gland is involved, as the fifth character (0=parotid, 1=submandibular, 2=sublingual) must match the clinical site; if unspecified, the 9th character '9' indicates unspecified gland location