2027 ICD-10-CM Diagnosis Code D47.2Monoclonal gammopathy
ICD-10-CM Codes›C00–D49›D37-D48›D47
- Billable — Valid for Submission
- Not Chronic
D47.2 is a billable ICD-10-CM diagnosis code for monoclonal gammopathy. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 814 through 816. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neoplasms of unspecified nature or uncertain behavior.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Benign monoclonal gammopathy
- Biclonal gammopathy
- Castleman disease
- Castleman disease with immunoglobulin M monoclonal gammopathy of uncertain significance
- Chronic urticaria
- Complex multigenic autoinflammatory syndrome
- Dysgammaglobulinemia
- Gammopathy
- Hyperplastic lymph node
- Hypersensitivity reaction mediated by immune complex
- Hypogammaglobulinemia
- Hypogammaglobulinemia due to monoclonal gammopathy of undetermined significance
- IgA monoclonal gammopathy of uncertain significance
- IgD monoclonal gammopathy of uncertain significance
- IgG monoclonal gammopathy of uncertain significance
- IgM monoclonal gammopathy of uncertain significance
- Immune-complex glomerulonephritis
- Immunoglobulin G deficiency
- Immunoglobulin G deficiency due to monoclonal gammopathy of undetermined significance
- Immunosecretory disorder
- Light chain disease
- Light chain monoclonal gammopathy of uncertain significance
- Monoclonal free light chain detected
- Monoclonal gammopathy
- Monoclonal gammopathy of renal significance
- Monoclonal gammopathy of uncertain significance
- Monoclonal immunoglobulin A detected
- Monoclonal immunoglobulin D detected
- Monoclonal immunoglobulin G detected
- Monoclonal immunoglobulin-associated kidney disease
- Motor neuron disease due to gammopathy
- Necrotizing cutaneous vasculitis
- Neuropathy associated with dysproteinemias
- Neuropathy in benign monoclonal gammopathy
- Non-amyloid monoclonal immunoglobulin deposition disease
- POEMS syndrome
- Polyneuropathy associated with immunoglobulin M monoclonal gammopathy of uncertain significance
- Proliferative glomerulonephritis with monoclonal immune deposits
- Schnitzler syndrome
- TEMPI syndrome
- Triclonal gammopathy
- Urticarial vasculitis
- Urticarial vasculitis with monoclonal IgM component, Schnitzler
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to D47.2: its own notes plus those printed at block D37-D48 and Chapter 2. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Monoclonal gammopathy of undetermined significance [MGUS]
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- neoplasms of unspecified behavior (D49.-)
Notes
General instructions on how these codes are used.
- Functional activity
- All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
- Morphology [Histology]
- Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
- Primary malignant neoplasms overlapping site boundaries
- A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
- Malignant neoplasm of ectopic tissue
- Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name D47.2, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming D47.2: they are not reported together with it, unless the two conditions are unrelated.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
monoclonal D47.2
Syndrome See Also: Disease;
Schnitzler D47.2
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Blood Disorders
Your blood is living tissue made up of liquid and solids. The liquid part, called plasma, is made of water, salts and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells and platelets.
Read the full article at MedlinePlus
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Convert D47.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About D47.2Overview
What is the ICD-10 code for monoclonal gammopathy?
The ICD-10-CM code for monoclonal gammopathy is D47.2 (sometimes written as D472). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is D47.2 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report monoclonal gammopathy on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does D47.2 group to?
When monoclonal gammopathy is the principal diagnosis on an inpatient stay, it groups to MS-DRG 816, 814, 815, with relative weights from 0.7378 to 2.0727 depending on complications. Higher weights mean higher Medicare reimbursement.
Can D47.2 be reported with a code from D49?
Not as a rule. The Excludes1 note at block D37-D48, which applies to D47.2, lists "neoplasms of unspecified behavior (D49.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of D47.2?
Under the General Equivalence Mappings, monoclonal gammopathy converts to ICD-9-CM 273.1 (monoclon paraproteinemia). The mapping is approximate, so confirm the match fits the documentation.
