ICD-10 Code E64 – Sequelae of malnutrition and other nutritional deficiencies (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E64 – Sequelae of malnutrition and other nutritional deficiencies
What it is
E64 identifies late effects left after malnutrition or another nutritional deficiency has already occurred. Use it for ongoing conditions that remain after the original deficiency is no longer the active problem.
Clinical signs
Findings depend on the prior deficiency and may include residual weakness, growth or developmental effects, or other lasting tissue changes. Clinical features vary; refer to documentation.
When to use this code
Use E64 when the record states a current condition is a sequela of past malnutrition or a prior nutrient deficiency. It is appropriate when the acute deficiency is resolved but the residual problem is still being treated or evaluated.
Code the documented aftereffect rather than the old deficiency episode alone. If the chart does not clearly link the current condition to the prior nutritional problem, check documentation.
Do not use for
Do not use E64 for active malnutrition, vitamin deficiency, or undernutrition without a documented sequela. Do not assign it when the residual condition is unrelated or the cause is not confirmed.
Coding tip
Look for wording such as “due to,” “after,” or “sequela of” to support the link to the prior deficiency.