2026 ICD-10-CM Diagnosis Code C95Leukemia of unspecified cell type

ICD-10-CM Codes›C00–D49›C81-C96›C95

ICD-10-CM C95
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C95 is a non-billable ICD-10-CM category code for leukemia of unspecified cell type, so it cannot be submitted on claims. Use a more specific code from this category instead, such as C95.00, C95.01, C95.02, and C95.10.

Code Identity

ICD-10-CM Code
C95
Billable Status
No — Non-Billable Category
Code Describes
Leukemia of unspecified 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
CategoryC95Leukemia of unspecified cell type
This CodeC95Leukemia of unspecified cell type

Specific Coding for Leukemia of unspecified cell typeOverview

Non-specific codes like C95 require more characters. Use one of these billable codes instead:

  • C95.0 for Acute leukemia of unspecified cell type

  • Use C95.00 for Acute leukemia of unspecified cell type not having achieved remission

  • Use C95.01 for Acute leukemia of unspecified cell type, in remission

  • Use C95.02 for Acute leukemia of unspecified cell type, in relapse

  • C95.1 for Chronic leukemia of unspecified cell type

  • Use C95.10 for Chronic leukemia of unspecified cell type not having achieved remission

  • Use C95.11 for Chronic leukemia of unspecified cell type, in remission

  • Use C95.12 for Chronic leukemia of unspecified cell type, in relapse

  • C95.9 for Leukemia, unspecified

  • Use C95.90 for Leukemia, unspecified not having achieved remission

  • Use C95.91 for Leukemia, unspecified, in remission

  • Use C95.92 for Leukemia, unspecified, in relapse

Tabular List NotesGuidance

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

Type 1 Excludes

  • personal history of leukemia Z85.6

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 C95Overview

Is C95 (Leukemia of unspecified cell type) a billable code?

No. This is a category header that groups the codes for leukemia of unspecified cell type, and headers cannot be submitted on claims. Claims for leukemia of unspecified cell type need a more specific code from this category, such as C95.00, C95.01, and C95.02.