D23.4
BillableOther benign neoplasm of skin of scalp and neck
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is D23.4 an HCC code?
No. D23.4 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
D23.4 is the ICD-10-CM diagnosis code for other benign neoplasm of skin of scalp and neck. A benign (non-cancerous) skin growth on the scalp, neck, or surrounding areas, such as a mole or cyst. D23.4 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering benign neoplasms, except benign neuroendocrine tumors (d10-d36).
D23.4 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 code covers both scalp and neck regions; document the specific location for clarity in the medical record.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for D23.4 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code covers both scalp and neck regions; document the specific location for clarity in the medical record
- •Distinguish between benign skin growths and hair follicle conditions when coding