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  3. Ch. C00-D49
  4. Sec. C81-C96
  5. Category C90
Category C90

Multiple myeloma and malignant plasma cell neoplasms

Clinical Classification Guidelines

Specific Diagnosis Codes

Multiple myeloma
C90.0
Multiple myeloma not having achieved remission
C90.00
Multiple myeloma in remission
C90.01
Multiple myeloma in relapse
C90.02
Plasma cell leukemia
C90.1
Plasma cell leukemia not having achieved remission
C90.10
Plasma cell leukemia in remission
C90.11
Plasma cell leukemia in relapse
C90.12
Extramedullary plasmacytoma
C90.2
Extramedullary plasmacytoma not having achieved remission
C90.20
Extramedullary plasmacytoma in remission
C90.21
Extramedullary plasmacytoma in relapse
C90.22
Solitary plasmacytoma
C90.3
Solitary plasmacytoma not having achieved remission
C90.30
Solitary plasmacytoma in remission
C90.31
Solitary plasmacytoma in relapse
C90.32
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Data updated for October 2025 release.

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