Other disorders of galactose metabolism

This code signifies various inherited metabolic defects affecting the body's ability to process galactose, a sugar found in dairy products. These disorders lead to an accumulation of galactose or its metabolites, which can cause a range of symptoms impacting multiple organ systems. It encompasses conditions other than classic galactosemia (galactose-1-phosphate uridyltransferase deficiency) and galactokinase deficiency.

Use this code when documentation specifies a disorder of galactose metabolism that is not classic galactosemia or galactokinase deficiency. This includes conditions like UDP-galactose-4'-epimerase deficiency (GALE deficiency) or other less common enzymatic defects in the galactose metabolic pathway. Supporting documentation should clearly identify the specific enzyme deficiency or the clinical diagnosis of an "other" galactose metabolism disorder.

• Ensure the documentation explicitly rules out classic galactosemia (E74.21) and galactokinase deficiency (E74.22) before assigning this code.
• Look for specific enzyme names (e.g., UDP-galactose-4'-epimerase) or a general diagnosis of "other galactosemia" or "atypical galactosemia."
• Code any associated manifestations or complications (e.g., cataracts, liver dysfunction) separately, if documented.