MCMedicalCodingSoftware
C90.1

C90.1: Plasma cell leukemia

Non-billable headerICD-10-CM

C90.1 is a non-billable header ICD-10-CM code for plasma cell leukemia. It cannot be billed on its own: choose one of the more specific child codes below.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Plasmacytic leukemia

Excludes1 inherited from the categories above C90.1

A category’s note binds every code beneath it.

Written on C90: Multiple myeloma and malignant plasma cell neoplasms

  • personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues (Z85.79)

Other codes that can never be billed with C90.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • C94Other leukemias of specified cell type
  • Z85.79Personal history of other malignant neoplasms of lymphoid, hematopoietic and related tissues

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 C90.1

3 child codes. Green means billable.

Other codes under C90

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.