ICD-10-CM Tabular Index · Chapter 4 · FY 2026 E40

Kwashiorkor (E40) ICD-10-CM

The E40 code range covers kwashiorkor with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
1
Diagnosis Codes
1
Billable Codes
E40
Code Range
E40–E46
Parent Section

Inclusion Terms

These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

ICD-10-CM

Codes in the E40 Range 1 codes · 1 billable

1 of 1 shown
  • E40 Kwashiorkor

Clinical Terms in This Code Range

Definitions from the National Library of Medicine for conditions coded in the E40 range.

Kwashiorkor

A syndrome produced by severe protein deficiency, characterized by retarded growth, changes in skin and hair pigment, edema, and pathologic changes in the liver, including fatty infiltration, necrosis, and fibrosis. The word is a local name in Gold Coast, Africa, meaning displaced child. Although first reported from Africa, kwashiorkor is now known throughout the world, but mainly in the tropics and subtropics. It is considered to be related to marasmus. (From Dorland, 27th ed)

About the E40 Code Range

This section covers the ICD-10 code E40, which is specifically used for Kwashiorkor, a severe form of malnutrition.

Kwashiorkor is a condition marked by protein deficiency, often occurring in children who have insufficient protein intake despite adequate calorie consumption. Known simply as "Kwashiorkor," this code pinpointedly documents cases of this type of malnutrition in medical records and billing. Using the ICD-10 code for Kwashiorkor (E40) helps healthcare providers accurately identify and classify this distinct nutritional disorder. This precision assists in ensuring proper treatment, monitoring, and reporting of malnutrition cases where Kwashiorkor is diagnosed, differentiating it clearly from other types of malnutrition in clinical and administrative settings.

Questions About This Page

How many billable codes are in the E40 range?

Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.

What does the E40 range classify?

The range classifies kwashiorkor. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.