C90Header code — not billable
Multiple myeloma and malignant plasma cell neoplasms
- Chapter
- 2. Neoplasms
- Category
- C90
- Effective date
- October 1, 2026
Related codes in category C90
C90.0Multiple myelomaC90.00Multiple myeloma not having achieved remissionYesC90.01Multiple myeloma in remissionYesC90.02Multiple myeloma in relapseYesC90.1Plasma cell leukemiaC90.10Plasma cell leukemia not having achieved remissionYesC90.11Plasma cell leukemia in remissionYesC90.12Plasma cell leukemia in relapseYesC90.2Extramedullary plasmacytomaC90.20Extramedullary plasmacytoma not having achieved remissionYesC90.21Extramedullary plasmacytoma in remissionYesC90.22Extramedullary plasmacytoma in relapseYes
Frequently asked questions
What is ICD-10 code C90?
C90 is an ICD-10-CM diagnosis code for Multiple myeloma and malignant plasma cell neoplasms.
Is C90 a billable code?
No. C90 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is C90 in?
C90 falls under Chapter 2: Neoplasms.
When did C90 become effective?
C90 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to C90?
C90 belongs to category C90, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.