ICD-10 Code E45 – Retarded Development Following Protein-Calorie Malnutrition (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E45 – Retarded development following protein-calorie malnutrition
What it is
E45 identifies delayed development linked to protein-calorie malnutrition. Use it when the record shows growth or developmental delay caused by inadequate nutrition rather than a separate congenital disorder.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may describe poor growth, undernutrition, and developmental delay in a child with a history of protein-calorie deficiency.
When to use this code
Use E45 when the provider documents retarded development due to protein-calorie malnutrition or clearly ties developmental delay to nutritional deficiency. It fits cases where malnutrition is the underlying cause, not just a coexisting problem. Check documentation if the cause is unclear.
Do not use for
Do not use this code for nonspecific failure to thrive, isolated underweight, or developmental delay without a documented link to protein-calorie malnutrition. Do not assume malnutrition is present without provider support.
Coding tip
Confirm that the record states both malnutrition and the developmental effect before assigning E45.