2026 ICD-10-CM Diagnosis Code D70.9Neutropenia, unspecified

ICD-10-CM Codes›D50–D89›D70-D77›D70

ICD-10-CM D70.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D70.9 is a billable ICD-10-CM diagnosis code for neutropenia, unspecified. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 808 through 810. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Diseases of white blood cells.

Code Identity

ICD-10-CM Code
D70.9
Billable Status
Yes — Valid for Submission
Code Describes
Neutropenia, unspecified
Short Description
Neutropenia, unspecified
Same as the full description in the CMS dataset.
Parent Code
D70
Neutropenia

Code Classification

ChapterD50–D89Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
SectionD70-D77Other disorders of blood and blood-forming organs
CategoryD70Neutropenia
This CodeD70.9Neutropenia, unspecified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired eosinopenia
  • Acquired neutropenia
  • Adult chronic idiopathic neutropenia
  • Agranulocytosis
  • Agranulocytosis co-occurrent with human immunodeficiency virus infection
  • Agranulocytosis with AIDS
  • Benign granulocytopenia in childhood
  • Blood eosinophil number below reference range
  • Chronic benign granulocytopenia
  • Chronic idiopathic neutropenia
  • Constitutional eosinopenia
  • Disorder of eosinophil
  • Eosinopenia
  • Granulocytopenic disorder
  • Immune neutropenia
  • Myelokathexis
  • Neutropenia
  • Neutropenia associated with infectious disease
  • Neutropenia with AIDS
  • Neutropenic disorder
  • Periodontitis exacerbated by acquired neutropenia
  • Periodontitis exacerbated by chronic familial neutropenia
  • Periodontitis exacerbated by familial neutropenia
  • Poikiloderma with neutropenia

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Agranulocytosis(chronic) (cyclical) (genetic) (infantile) (periodic) (pernicious)
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • neutropenic
    • Leukopenia
      • malignant
    • Myelokathexis
    • Neutropenia, neutropenic(chronic) (genetic) (idiopathic) (immune) (infantile) (malignant) (pernicious) (splenic)
    • Neutropenia, neutropenic(chronic) (genetic) (idiopathic) (immune) (infantile) (malignant) (pernicious) (splenic)
      • fever

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR BLD007
Diseases of white blood cells
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Chemotherapy-Induced Febrile Neutropenia

    fever accompanied by a significant reduction in neutrophil count associated with chemotherapy.

  • Febrile Neutropenia

    fever accompanied by a significant reduction in the number of neutrophils.

  • Neutropenia

    a decrease in the number of neutrophils found in the blood.

  • Agranulocytosis

    a decrease in the number of granulocytes; (basophils; eosinophils; and neutrophils).

  • Feline Panleukopenia

    a highly contagious dna virus infection of the cat family, characterized by fever, enteritis and bone marrow changes. it is also called feline ataxia, feline agranulocytosis, feline infectious enteritis, cat fever, cat plague, and show fever. it is caused by feline panleukopenia virus or the closely related mink enteritis virus or canine parvovirus.

  • Neutrophils

    granular leukocytes having a nucleus with three to five lobes connected by slender threads of chromatin, and cytoplasm containing fine inconspicuous granules and stainable by neutral dyes.

  • Agranulocytosis

    a marked decrease in the number of mature granulocytes (most often neutrophils) in the peripheral blood.

  • Chemotherapy Related Agranulocytosis|Chemotherapy-Related Agranulocytosis

    agranulocytosis that occurs with chemotherapy.

  • Congenital Neutropenia|congenital neutropenia|genetic infantile agranulocytosis|infantile genetic agranulocytosis

    a rare congenital disorder characterized by mild or severe reduction of neutrophils in the peripheral blood and recurrent infantile infections.

  • Cyclic Neutropenia|CH|CN|Cyclic Agranulocytosis|Cyclic Hematopoiesis|Cyclic Hematopoiesis|Dysplasia, Myelocytic Periodic|Periodic Neutropenia|cyclic neutropenia|periodic neutropenia

    a hematologic disorder caused by a mutation in the elane (ela2) gene; clinical manifestations include recurrent neutropenia with resultant susceptibility to infection leading to fever.

  • Autoimmune Neutropenia|AIN|AIN

    a condition characterized by the autoantibody-induced destruction of neutrophils.

  • Immune Neutropenia

    neutropenia caused by immune destruction of mature neutrophils. it may be further categorized as autoimmune, alloimmune, drug-induced, or idiopathic immune neutropenia.

Patient EducationClinical

Blood Disorders

Your blood is living tissue made up of liquid and solids. The liquid part, called plasma, is made of water, salts and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells and platelets.

Read the full article at MedlinePlus

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

Convert D70.9 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
288.00 Neutropenia NOS
Exact Match The mapping is direct, with no qualifiers.

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 D70.9Overview

Is D70.9 (Neutropenia) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report neutropenia, unspecified on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D70.9 group to?

When neutropenia, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 808, 809, 810, with relative weights from 1.0466 to 2.2079 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D70.9?

Under the General Equivalence Mappings, neutropenia, unspecified converts to ICD-9-CM 288.00 (neutropenia NOS). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.