ICD-10-CM category
C90: Multiple myeloma and malignant plasma cell neoplasms
Codes under C90 (Multiple myeloma and malignant plasma cell neoplasms). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| C90.0 | Multiple myeloma | — |
| C90.00 | Multiple myeloma not having achieved remission | ✓ |
| C90.01 | Multiple myeloma in remission | ✓ |
| C90.1 | Plasma cell leukemia | — |
| C90.02 | Multiple myeloma in relapse | ✓ |
| C90.2 | Extramedullary plasmacytoma | — |
| C90.3 | Solitary plasmacytoma | — |
| C90.10 | Plasma cell leukemia not having achieved remission | ✓ |
| C90.11 | Plasma cell leukemia in remission | ✓ |
| C90.12 | Plasma cell leukemia in relapse | ✓ |
| C90.20 | Extramedullary plasmacytoma not having achieved remission | ✓ |
| C90.21 | Extramedullary plasmacytoma in remission | ✓ |
| C90.22 | Extramedullary plasmacytoma in relapse | ✓ |
| C90.30 | Solitary plasmacytoma not having achieved remission | ✓ |
| C90.31 | Solitary plasmacytoma in remission | ✓ |
| C90.32 | Solitary plasmacytoma in relapse | ✓ |
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free