D41.02 ICD-10-CM Code: Neoplasm of uncertain behavior of left kidney
HCC Buddy Code Card
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FY 2026 Apr update / Neoplasms (C00-D49) / Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48)
D41.02
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceNeoplasm of uncertain behavior of left kidney
A growth in the left kidney that has uncertain malignant behavior and needs additional investigation to determine its classification.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for D41.02 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for D41.02 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for D41.02 in this effective period.
Excludes 1
Official- neoplasm of uncertain behavior of renal pelvis (D41.1-)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for D41.02 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for D41.02 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for D41.02 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is D41.02 an HCC code?
No. D41.02 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- D41.02
- Description
- Neoplasm of uncertain behavior of left kidney
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
D41.02 is the ICD-10-CM diagnosis code for neoplasm of uncertain behavior of left kidney. A growth in the left kidney that has uncertain malignant behavior and needs additional investigation to determine its classification. D41.02 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).
D41.02 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.
Ensure left kidney laterality is clearly documented before assigning this code.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for D41.02 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Ensure left kidney laterality is clearly documented before assigning this code
- •Do not use this code if the kidney side is unspecified; use D41.00 instead