ICD-10 Code E64.9 – Sequelae of unspecified nutritional deficiency (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E64.9 – Sequelae of unspecified nutritional deficiency
What it is
E64.9 identifies lingering effects from a prior nutritional deficiency when the exact deficiency is not specified. Use it for residual problems after the deficiency has already occurred, not for active undernutrition.
Clinical signs
Clinical features vary; refer to documentation. You may see persistent weakness, neurologic changes, skin or hair changes, or other aftereffects linked to a past deficiency.
When to use this code
Use this code when the record clearly states sequelae or residual effects from a nutritional deficiency, but does not name the specific deficiency. It fits follow-up care for ongoing problems after the original deficiency has been treated or resolved. Check documentation if the note only describes current malnutrition.
Do not use for
Do not use E64.9 for active nutritional deficiency, malnutrition, or unspecified poor intake without sequelae. If the deficiency type is known, code the specific condition instead.
Coding tip
Look for wording such as “late effect,” “residual,” or “sequelae” before assigning E64.9.