N14.3
BillableNephropathy induced by heavy metals
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is N14.3 an HCC code?
No. N14.3 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
N14.3 is the ICD-10-CM diagnosis code for nephropathy induced by heavy metals. Kidney damage caused by exposure to heavy metals such as mercury, lead, or cadmium. These toxic metals accumulate in the kidneys and cause injury to the filtering structures. N14.3 sits in the ICD-10-CM chapter for diseases of the genitourinary system (n00-n99), within the section covering renal tubulo-interstitial diseases (n10-n16).
N14.3 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.
Document the specific heavy metal exposure (mercury, lead, cadmium, etc.) in the medical record for occupational or environmental tracking.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for N14.3 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Document the specific heavy metal exposure (mercury, lead, cadmium, etc.) in the medical record for occupational or environmental tracking
- •Consider coding an additional code for the external cause of the heavy metal exposure if applicable