| C90 | Multiple myeloma and malignant plasma cell neoplasms | NON-BILLABLE CODE |
| C90.0 | Multiple myeloma | NON-BILLABLE CODE |
| C90.00 | Multiple myeloma not having achieved remission | BILLABLE CODE |
| C90.02 | Multiple myeloma in relapse | BILLABLE CODE |
| C90.1 | Plasma cell leukemia | NON-BILLABLE CODE |
| C90.10 | Plasma cell leukemia not having achieved remission | BILLABLE CODE |
| C90.11 | Plasma cell leukemia in remission | BILLABLE CODE |
| C90.12 | Plasma cell leukemia in relapse | BILLABLE CODE |
| C90.2 | Extramedullary plasmacytoma | NON-BILLABLE CODE |
| C90.20 | Extramedullary plasmacytoma not having achieved remission | BILLABLE CODE |
| C90.21 | Extramedullary plasmacytoma in remission | BILLABLE CODE |
| C90.22 | Extramedullary plasmacytoma in relapse | BILLABLE CODE |
| C90.3 | Solitary plasmacytoma | NON-BILLABLE CODE |
| C90.30 | Solitary plasmacytoma not having achieved remission | BILLABLE CODE |
| C90.31 | Solitary plasmacytoma in remission | BILLABLE CODE |
| C90.32 | Solitary plasmacytoma in relapse | BILLABLE CODE |
