ICD-10 Code E74.2 – Disorders of galactose metabolism (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E74.2 – Disorders of galactose metabolism
What it is
E74.2 identifies inherited disorders that impair the body’s ability to process galactose, a sugar found in milk and dairy products. Use it for documented galactose metabolism disorders, including galactosemia, when the record supports that diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include poor feeding, vomiting, jaundice, lethargy, failure to thrive, or liver dysfunction in infants with a confirmed metabolic disorder.
When to use this code
Use E74.2 when the provider documents a disorder of galactose metabolism, such as galactosemia or another specified enzymatic defect in galactose handling. It is appropriate when the diagnosis is confirmed, suspected by evaluation, or listed as an active condition in the chart.
Choose this code for metabolic disease management, newborn screening follow-up, or specialist assessment tied to the documented disorder. If the note only mentions milk intolerance or nonspecific feeding issues, check documentation before coding E74.2.
Do not use for
Do not use E74.2 for lactose intolerance, general malabsorption, or nonspecific gastrointestinal symptoms without a documented galactose metabolism disorder. Check documentation if the chart does not clearly identify an inherited metabolic condition.
Coding tip
Verify the exact metabolic diagnosis and avoid substituting this code for dietary intolerance or screening alone.