ICD-10-CM · Chapter 2 · C00-D49
C90 Multiple myeloma and malignant plasma cell neoplasms
Excludes 1 (cannot be coded together)
- personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues (Z85.79)
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| C90..0 | Multiple myeloma | No |
| C90..00 | Multiple myeloma not having achieved remission | Yes |
| C90..01 | Multiple myeloma in remission | Yes |
| C90..02 | Multiple myeloma in relapse | Yes |
| C90..1 | Plasma cell leukemia | No |
| C90..10 | Plasma cell leukemia not having achieved remission | Yes |
| C90..11 | Plasma cell leukemia in remission | Yes |
| C90..12 | Plasma cell leukemia in relapse | Yes |
| C90..2 | Extramedullary plasmacytoma | No |
| C90..20 | Extramedullary plasmacytoma not having achieved remission | Yes |
| C90..21 | Extramedullary plasmacytoma in remission | Yes |
| C90..22 | Extramedullary plasmacytoma in relapse | Yes |
| C90..3 | Solitary plasmacytoma | No |
| C90..30 | Solitary plasmacytoma not having achieved remission | Yes |
| C90..31 | Solitary plasmacytoma in remission | Yes |
| C90..32 | Solitary plasmacytoma in relapse | Yes |
Last reviewed: September 2026