C90
C90: Multiple myeloma and malignant plasma cell neoplasms
Non-billable headerICD-10-CM
C90 is a non-billable header ICD-10-CM code for multiple myeloma and malignant plasma cell neoplasms. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues (Z85.79)
Other codes that can never be billed with C90
Their own Excludes1 notes name this code, so the conflict is not listed above.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead C90
4 child codes. Green means billable.