C93

ICD-10Non-billable category

Monocytic leukemia

Official ICD-10-CM descriptor (FY2026)

Monocytic leukemia

C93 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Includes

  • monocytoid leukemia

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • personal history of leukemia (Z85.6)

More specific codes under C93

Where this code sits

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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