E72.19

HCC Category Mapping

What This Code Means

Other rare metabolic disorders affecting sulfur-containing amino acids not classified elsewhere.

Coding Tips

• •Use this code for sulfur-bearing amino acid disorders that don't fit into homocystinuria or methylenetetrahydrofolate reductase deficiency categories
• •Provide specific documentation of the disorder type to support medical necessity

Clinical Significance

This residual code captures disorders of sulfur-bearing amino acid metabolism not classified as homocystinuria or methylenetetrahydrofolate reductase deficiency, including conditions such as sulfite oxidase deficiency, methionine adenosyltransferase deficiency, and other rare defects in the transsulfuration or remethylation pathways. Clinical presentations vary from benign biochemical variants to severe neurological disease depending on the specific enzyme involved.

Documentation Requirements

• ✓Document the specific sulfur amino acid disorder identified, relevant biochemical markers (plasma amino acids, urine sulfite testing), enzyme activity or genetic testing results, clinical manifestations, and management plan.
• ✓Record why the condition does not fit E72.11 or E72.12.

Commonly Confused Codes