M27.1
BillableGiant cell granuloma, central
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is M27.1 an HCC code?
No. M27.1 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
M27.1 is the ICD-10-CM diagnosis code for giant cell granuloma, central. A benign tumor-like growth in the jaw bone made up of giant cells, typically found in the center of the jaw. M27.1 sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering dentofacial anomalies [including malocclusion] and other disorders of jaw (m26-m27).
M27.1 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.
This is a specific diagnosis of a central giant cell granuloma; do not confuse with peripheral giant cell granuloma which affects gum tissue.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for M27.1 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This is a specific diagnosis of a central giant cell granuloma; do not confuse with peripheral giant cell granuloma which affects gum tissue
- •Document the location (upper or lower jaw) if available for more specific coding
Excludes 1 — Do NOT code together
- peripheral giant cell granuloma (K06.8)