C94 – Other leukemias of specified cell type

ICD-10-CM 2027 diagnosis code · Malignant neoplasms of lymphoid, hematopoietic and related tissue

Non-billable header

ICD-10-CM code C94

Code: C94 (claims format: C94)
Description: Other leukemias of specified cell type
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 2. Neoplasms (C00-D49)
Block: C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue

Billable codes under C94

C94 is a header code and cannot be used on claims. Choose the most specific code:

C94.0 – Acute erythroid leukemiaHeader (more codes below)
C94.2 – Acute megakaryoblastic leukemiaHeader (more codes below)
C94.3 – Mast cell leukemiaHeader (more codes below)
C94.4 – Acute panmyelosis with myelofibrosisHeader (more codes below)
C94.6 – Myelodysplastic disease, not elsewhere classifiedBillable
C94.8 – Other specified leukemiasHeader (more codes below)

Notes for C94

Excludes1 (not coded here):

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

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block C81-C96

Excludes2 (not included here):

Kaposi's sarcoma of lymph nodes (C46.3)
secondary and unspecified neoplasm of lymph nodes (C77.-)
secondary neoplasm of bone marrow (C79.52)
secondary neoplasm of spleen (C78.89)

Frequently asked questions

What is ICD-10 code C94?

C94 is the ICD-10-CM code for other leukemias of specified cell type, in the block C81-C96 (Malignant neoplasms of lymphoid, hematopoietic and related tissue).

Is C94 a billable code?

No. C94 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.