D47.2 Monoclonal gammopathy

The ICD-10-CM code for Monoclonal gammopathy is D47.2 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

2: Neoplasms (C00-D49)

Section

D37-D48: Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (D37-D48)

Category D47

14 codes (11 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to D47.2:

• Gammopathy (of undetermined significance [MGUS])
• Paraproteinemia › monoclonal
• Syndrome › Schnitzler
• Paraproteinemia › secondary to malignant disease
• Macroglobulinemia (idiopathic) (primary) › monoclonal (essential)
• Gammopathy (of undetermined significance [MGUS]) › monoclonal
• Gammopathy (of undetermined significance [MGUS]) › associated with lymphoplasmacytic dyscrasia

Inclusion Terms

• Monoclonal gammopathy of undetermined significance [MGUS]

U.S. Hospital Utilization

• An estimated 64,115 U.S. inpatient stays in 2023 included D47.2 among the documented diagnoses.
• 320 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)