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v1.0.0
ICD-10 Guide
DiagnosesMgus

Mgus

ICD-10 Coding for MGUS(D47.2)

PRIMARY SPECIALTYHematology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Mgus?
Essential facts and insights about MGUS

Key Clinical Considerations:

  • Asymptomatic monoclonal protein in serum or urine
  • Serum protein electrophoresis showing monoclonal spike
  • Bone marrow biopsy showing <10% plasma cells

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of symptoms and laboratory results
  • Use of terms like 'monoclonal gammopathy' and 'MGUS'
  • Examples: 'Patient presents with elevated monoclonal protein levels without end-organ damage.'

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for MGUS coding to avoid misclassification.
  • Common errors include coding as multiple myeloma when symptoms are absent.

Code Exclusions

Important Exclusions

  • Multiple myeloma, Waldenström macroglobulinemia
  • Other plasma cell disorders

Related ICD-10 Codes

Primary Codes
D47.2
Monoclonal gammopathy of undetermined significance
Ancillary Codes
Z85.79
R79.89
Differential Codes
C90.0
D89.0

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Hematology

Specialty Applications

  • Adults, particularly those over 50
  • Outpatient hematology clinics and diagnostic labs

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Document the presence of monoclonal protein and absence of symptoms.

Billing considerations?

Ensure accurate coding to reflect MGUS without complications.