ICD-10-CM diagnosis code
C90.01 Multiple myeloma in remission
- Billable
- Yes, a complete code (FY2026)
- Chapter
- 2. Neoplasms
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Other codes in C90
12 complete codes in this category.
- 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
Documentation tips
- Make sure the note supports every element of the title, “Multiple myeloma in remission”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to C90.
The international WHO ICD-10 also has C90, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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