DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

C94 Other leukemias of specified cell type

  • Header · not billable

C94 is not billable. The category heads 16 billable codes in FY2027, grouped under 6 subdivisions.

Index → code

Where it sits

  1. Chapter 2 Neoplasms (C00-D49)
  2. C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
  3. C94 Other leukemias of specified cell type
Billable codes
16
Subdivisions
6
CC / MCC codes
16 / 0
HCC V28 codes
16
New FY2027
0
Index entries
24

Codes in C94

  1. C94.0
    Acute erythroid leukemia
    Header
    Inclusion terms 2

    Inclusion terms

    • Acute myeloid leukemia M6(a)(b)
    • Erythroleukemia
  2. C94.00
    Acute erythroid leukemia, not having achieved remission
    BillableCC17
    Inclusion terms 2

    Inclusion terms

    • Acute erythroid leukemia with failed remission
    • Acute erythroid leukemia NOS
  3. C94.01
    Acute erythroid leukemia, in remission
    BillableCC17
  4. C94.02
    Acute erythroid leukemia, in relapse
    BillableCC17
  5. C94.2
    Acute megakaryoblastic leukemia
    Header
    Inclusion terms 2

    Inclusion terms

    • Acute myeloid leukemia M7
    • Acute megakaryocytic leukemia
  6. C94.20
    Acute megakaryoblastic leukemia not having achieved remission
    BillableCC17
    Inclusion terms 2

    Inclusion terms

    • Acute megakaryoblastic leukemia with failed remission
    • Acute megakaryoblastic leukemia NOS
  7. C94.21
    Acute megakaryoblastic leukemia, in remission
    BillableCC17
  8. C94.22
    Acute megakaryoblastic leukemia, in relapse
    BillableCC17
  9. C94.3
    Mast cell leukemia
    Header
  10. C94.30
    Mast cell leukemia not having achieved remission
    BillableCC20
    Inclusion terms 2

    Inclusion terms

    • Mast cell leukemia with failed remission
    • Mast cell leukemia NOS
  11. C94.31
    Mast cell leukemia, in remission
    BillableCC20
  12. C94.32
    Mast cell leukemia, in relapse
    BillableCC20
  13. C94.4
    Acute panmyelosis with myelofibrosis
    Header
    Inclusion terms 1, Excludes1 2

    Inclusion terms

    • Acute myelofibrosis

    Excludes1

    • myelofibrosis NOS (D75.81) D75.81
    • secondary myelofibrosis NOS (D75.81) D75.81
  14. C94.40
    Acute panmyelosis with myelofibrosis not having achieved remission
    BillableCC17
    Inclusion terms 3

    Inclusion terms

    • Acute myelofibrosis NOS
    • Acute panmyelosis with myelofibrosis with failed remission
    • Acute panmyelosis NOS
  15. C94.41
    Acute panmyelosis with myelofibrosis, in remission
    BillableCC17
  16. C94.42
    Acute panmyelosis with myelofibrosis, in relapse
    BillableCC17
  17. C94.6
    Myelodysplastic disease, not elsewhere classified
    BillableCC19
    Inclusion terms 2

    Inclusion terms

    • Myelodysplastic/myeloproliferative neoplasm, unclassifiable
    • Myeloproliferative disease, not elsewhere classified
  18. C94.8
    Other specified leukemias
    Header
    Inclusion terms 2, Code also 1

    Inclusion terms

    • Aggressive NK-cell leukemia
    • Acute basophilic leukemia

    Code also

    • , if applicable, eosinophilia (D72.18) D72.18
  19. C94.80
    Other specified leukemias not having achieved remission
    BillableCC20
    Inclusion terms 2

    Inclusion terms

    • Other specified leukemia with failed remission
    • Other specified leukemias NOS
  20. C94.81
    Other specified leukemias, in remission
    BillableCC20
  21. C94.82
    Other specified leukemias, in relapse
    BillableCC20

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At C94

Excludes1

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

Notes that also apply

Block C81-C96 instructions (Excludes2 4): printed on the block page.

Chapter 2 instructions (Notes 8): printed on the chapter 2 page.

Index entries

  • Di Guglielmo's disease → C94.0-
  • Erythremia (acute) → C94.0-
  • Erythroleukemia → C94.0-
  • Panmyelosis (acute) (with myelofibrosis) → C94.4-
  • Leukemia, leukemicacute erythroid → C94.0-
  • Myelosiserythremic (acute) → C94.0-
  • Leukemia, leukemicacute megakaryoblastic → C94.2-
  • Leukemia, leukemicacute megakaryocytic → C94.2-
  • Myelosismegakaryocytic → C94.2-
  • Leukemia, leukemicmast cell → C94.3-
  • Mast cellleukemia → C94.3-
  • Myelofibrosisacute → C94.4-
  • Disease, diseasedmyelodysplastic → C94.6
  • Disease, diseasedmyelodysplastic/myeloproliferative neoplasm, unclassifiable → C94.6
  • Neoplasm, neoplasticmyelodysplastic/myeloproliferative, unclassifiable → C94.6
  • Leukemia, leukemicacute basophilic → C94.8-
  • Leukemia, leukemicaggressive NK-cell → C94.8-
  • Leukemia, leukemicchronic eosinophilic → C94.8-
  • Leukemia, leukemicspecified NEC → C94.8-
  • Leukemia, leukemicacute myeloid, NOSM6 (a)(b) → C94.0-
  • Leukemia, leukemicacute myeloid, NOSM7 → C94.2-
  • Disease, diseasedmyeloproliferativenot classified → C94.6
  • Disease, diseasedmyeloproliferativespecified NEC → C94.6
  • Disease, diseasedmyeloproliferativeunclassifiable → C94.6

NCHS Alphabetic Index. Index first, then the Tabular List.

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