ICD-10 Code E74.20 – Disorders of galactose metabolism, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E74.20 – Disorders of galactose metabolism, unspecified
What it is
E74.20 identifies an unspecified disorder affecting galactose metabolism. Use it when documentation confirms a galactose metabolic problem but does not name a specific inherited enzyme defect or subtype.
Clinical signs
Clinical features vary; refer to documentation. Standard references describe feeding intolerance, jaundice, vomiting, lethargy, or poor growth in some galactose metabolism disorders.
When to use this code
Use this code when the record states a galactose metabolism disorder, galactosemia, or related metabolic abnormality without further specification. It also fits when the provider documents a suspected or nonspecific disorder and no more precise diagnosis is recorded.
If the chart names a specific subtype, code that condition instead. Check documentation for inherited enzyme defects, newborn screening follow-up, or metabolic evaluation notes that support a more detailed code.
Do not use for
Do not use E74.20 for lactose intolerance, routine dietary avoidance, or isolated abnormal screening results without a documented disorder. Check documentation if the condition is a different inborn error of metabolism.
Coding tip
When the note only says “galactosemia” or “galactose disorder,” confirm whether a specific subtype is documented before assigning this unspecified code.