ICD-10 Code E42 – Marasmic Kwashiorkor (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E42 – Marasmic kwashiorkor
What it is
E42 identifies marasmic kwashiorkor, a severe form of protein-energy malnutrition with features of both wasting and protein deficiency. Use it when documentation specifically names this diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Commonly described findings include marked weight loss, muscle wasting, edema, and other signs of severe malnutrition.
When to use this code
Use E42 when the provider documents marasmic kwashiorkor, mixed malnutrition, or severe protein-energy malnutrition with both wasting and edema. Code the condition as documented, even if the note is brief. If the chart only says malnutrition without this specific term, check documentation.
Do not use for
Do not use this code for uncomplicated undernutrition, isolated marasmus, or kwashiorkor without the combined diagnosis. If the record is unclear, check documentation.
Coding tip
Confirm the exact malnutrition term in the provider note before assigning E42.