D47.2 ICD-10-CM Code: Monoclonal gammopathy
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FY 2026 Apr update / Neoplasms (C00-D49) / Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48)
D47.2
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceMonoclonal gammopathy
Monoclonal gammopathy is a condition where bone marrow produces too many identical copies of a single antibody protein, which can be detected in blood tests. This condition may be benign or can potentially progress to more serious blood cancers like multiple myeloma.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
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Code Book Path
Inclusion Terms
Official- Monoclonal gammopathy of undetermined significance [MGUS]
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for D47.2 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for D47.2 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for D47.2 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for D47.2 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for D47.2 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for D47.2 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is D47.2 an HCC code?
No. D47.2 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
D47.2 is the ICD-10-CM diagnosis code for monoclonal gammopathy. Monoclonal gammopathy is a condition where bone marrow produces too many identical copies of a single antibody protein, which can be detected in blood tests. This condition may be benign or can potentially progress to more serious blood cancers like multiple myeloma. D47.2 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).
D47.2 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.
Verify whether the documentation specifies 'of undetermined significance' (MGUS) or if there is evidence of progression to multiple myeloma or light chain disease, as these may require different codes.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for D47.2 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify whether the documentation specifies 'of undetermined significance' (MGUS) or if there is evidence of progression to multiple myeloma or light chain disease, as these may require different codes
- •Ensure the provider has documented the monoclonal gammopathy finding and confirmed it is not secondary to another malignancy or condition, as this affects code selection and sequencing