ICD-10 Code E72.1 – Disorders of sulfur-bearing amino-acid metabolism (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E72.1 – Disorders of sulfur-bearing amino-acid metabolism
What it is
This code identifies inherited or acquired problems in how the body processes sulfur-containing amino acids, such as methionine and cysteine. Use it when documentation states a sulfur-bearing amino-acid metabolism disorder without a more specific diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Patients may present with metabolic abnormalities, developmental concerns, or other findings tied to a confirmed sulfur amino-acid disorder.
When to use this code
Use E72.1 when the provider documents a disorder of sulfur-bearing amino-acid metabolism and does not name a more specific condition. It may also apply when the record describes a related inborn error of metabolism involving methionine or cysteine pathways. Check documentation for the exact disorder and coding specificity.
Do not use for
Do not use this code for nonspecific nutritional issues, routine amino acid abnormalities, or other metabolic disorders that are documented separately. If the chart names a different inherited condition, code that diagnosis instead.
Coding tip
Query for the exact metabolic diagnosis when the note is vague, because E72.1 is appropriate only when sulfur-bearing amino-acid metabolism is specifically documented.