E40 Kwashiorkor

The ICD-10-CM code for Kwashiorkor is E40 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

4: Endocrine, nutritional and metabolic diseases (E00-E89)

Section

E40-E46: Malnutrition (E40-E46)

Category E40

1 code (1 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to E40:

• Kwashiorkor
• Polycarential syndrome of infancy
• Pluricarential syndrome of infancy
• Syndrome › pluricarential of infancy
• Syndrome › plurideficiency
• Malnutrition › malignant
• Syndrome › polycarential of infancy
• Edema, edematous (infectious) (pitting) (toxic) › nutritional › with dyspigmentation, skin and hair

Inclusion Terms

• Severe malnutrition with nutritional edema with dyspigmentation of skin and hair

U.S. Hospital Utilization

• An estimated 205 U.S. inpatient stays in 2023 included E40 among the documented diagnoses.

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

Diabetes mellitus (TOC entry)

a. Diabetes mellitus ................................................................................................................... 39

Obesity (TOC entry)

b. Obesity .................................................................................................................................. 42

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)