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C94.4

C94.4: Acute panmyelosis with myelofibrosis

Non-billable headerICD-10-CM

C94.4 is a non-billable header ICD-10-CM code for acute panmyelosis with myelofibrosis. 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.

  • myelofibrosis NOS (D75.81)
  • secondary myelofibrosis NOS (D75.81)

Inclusion terms

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

  • Acute myelofibrosis

Excludes1 inherited from the categories above C94.4

A category’s note binds every code beneath it.

Written on C94: Other leukemias of specified cell type

  • leukemic reticuloendotheliosis (C91.4-)
  • myelodysplastic syndromes (D46.-)
  • personal history of leukemia (Z85.6)
  • plasma cell leukemia (C90.1-)

Other codes that can never be billed with C94.4

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 C94.4

3 child codes. Green means billable.

Other codes under C94

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.