Is C90 a billable code?
No. C90 is a header code that groups 12 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
C90: Multiple myeloma and malignant plasma cell neoplasms
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
C90 groups related diagnoses under multiple myeloma and malignant plasma cell neoplasms. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under C90
- C90.00Multiple myeloma not having achieved remission
- C90.01Multiple myeloma in remission
- C90.02Multiple myeloma in relapse
- C90.10Plasma cell leukemia not having achieved remission
- C90.11Plasma cell leukemia in remission
- C90.12Plasma cell leukemia in relapse
- C90.20Extramedullary plasmacytoma not having achieved remission
- C90.21Extramedullary plasmacytoma in remission
- C90.22Extramedullary plasmacytoma in relapse
- C90.30Solitary plasmacytoma not having achieved remission
- C90.31Solitary plasmacytoma in remission
- C90.32Solitary plasmacytoma in relapse
C90 questions
What does C90 mean?
C90 is the ICD-10-CM code for Multiple myeloma and malignant plasma cell neoplasms. It is in chapter 2, Neoplasms (C00-D49).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.