2026 ICD-10-CM Diagnosis Code C94Other leukemias of specified cell type

ICD-10-CM Codes›C00–D49›C81-C96›C94

ICD-10-CM C94
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C94 is a non-billable ICD-10-CM category code for other leukemias of specified cell type, so it cannot be submitted on claims. Use a more specific code from this category instead, such as C94.00, C94.01, C94.02, and C94.20.

Code Identity

ICD-10-CM Code
C94
Billable Status
No — Non-Billable Category
Code Describes
Other leukemias of specified cell type
Chapter
C81-C96
Malignant neoplasms of lymphoid, hematopoietic and related tissue

Code Classification

ChapterC00–D49Neoplasms
SectionC81-C96Malignant neoplasms of lymphoid, hematopoietic and related tissue
CategoryC94Other leukemias of specified cell type
This CodeC94Other leukemias of specified cell type

Specific Coding for Other leukemias of specified cell typeOverview

Non-specific codes like C94 require more characters. Use one of these billable codes instead:

  • C94.0 for Acute erythroid leukemia

  • Use C94.00 for Acute erythroid leukemia, not having achieved remission

  • Use C94.01 for Acute erythroid leukemia, in remission

  • Use C94.02 for Acute erythroid leukemia, in relapse

  • C94.2 for Acute megakaryoblastic leukemia

  • Use C94.20 for Acute megakaryoblastic leukemia not having achieved remission

  • Use C94.21 for Acute megakaryoblastic leukemia, in remission

  • Use C94.22 for Acute megakaryoblastic leukemia, in relapse

  • C94.3 for Mast cell leukemia

  • Use C94.30 for Mast cell leukemia not having achieved remission

  • Use C94.31 for Mast cell leukemia, in remission

  • Use C94.32 for Mast cell leukemia, in relapse

  • C94.4 for Acute panmyelosis with myelofibrosis

  • Use C94.40 for Acute panmyelosis with myelofibrosis not having achieved remission

  • Use C94.41 for Acute panmyelosis with myelofibrosis, in remission

  • Use C94.42 for Acute panmyelosis with myelofibrosis, in relapse

  • Use C94.6 for Myelodysplastic disease, not elsewhere classified

  • C94.8 for Other specified leukemias

  • Use C94.80 for Other specified leukemias not having achieved remission

  • Use C94.81 for Other specified leukemias, in remission

  • Use C94.82 for Other specified leukemias, in relapse

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

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

Patient EducationClinical

Leukemia

Leukemia is a term for cancers of the blood cells. Leukemia starts in blood-forming tissues such as the bone marrow. Your bone marrow makes the cells which will develop into white blood cells, red blood cells, and platelets. Each type of cell has a different job:

The full article covers:

  • What is leukemia?
  • What are the types of leukemia?
  • What causes leukemia?
  • Who is at risk for leukemia?
  • What are the symptoms of leukemia?
  • How is leukemia diagnosed?
  • What are the treatments for leukemia?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About C94Overview

Is C94 (Other leukemias of specified cell type) a billable code?

No. This is a category header that groups the codes for other leukemias of specified cell type, and headers cannot be submitted on claims. Claims for other leukemias of specified cell type need a more specific code from this category, such as C94.00, C94.01, and C94.02.