D70.1 Agranulocytosis secondary to cancer chemotherapy

The ICD-10-CM code for Agranulocytosis secondary to cancer chemotherapy is D70.1 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)

Section

D70-D77: Other disorders of blood and blood-forming organs (D70-D77)

Category D70

8 codes (7 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to D70.1:

• Agranulocytosis (chronic) (cyclical) (genetic) (infantile) (periodic) (pernicious) › cytoreductive cancer chemotherapy sequela
• Leukopenia › chemotherapy (cancer) induced
• Neutropenia, neutropenic (chronic) (genetic) (idiopathic) (immune) (infantile) (malignant) (pernicious) (splenic) › cytoreductive cancer chemotherapy sequela
• Neutropenia, neutropenic (chronic) (genetic) (idiopathic) (immune) (infantile) (malignant) (pernicious) (splenic) › drug-induced › due to cytoreductive cancer chemotherapy
• Leukopenia › drug induced NEC › due to cytoreductive cancer chemotherapy
• Agranulocytosis (chronic) (cyclical) (genetic) (infantile) (periodic) (pernicious) › drug-induced › due to cytoreductive cancer chemotherapy
• Agranulocytosis (chronic) (cyclical) (genetic) (infantile) (periodic) (pernicious) › secondary › drug-induced › due to cytoreductive cancer chemotherapy
• Neutropenia, neutropenic (chronic) (genetic) (idiopathic) (immune) (infantile) (malignant) (pernicious) (splenic) › secondary (cyclic) (periodic) (splenic) › drug-induced › due to cytoreductive cancer chemotherapy

U.S. Hospital Utilization

• An estimated 48,170 U.S. inpatient stays in 2023 included D70.1 among the documented diagnoses.
• 7,265 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Chapter 3 TOC entry

3. Chapter 3: Disease of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89) ............................................................................................. 39

Reserved for future guideline expansion

Reserved for future guideline expansion ...................................................................................... 39

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)