E72.4
ICD-10BillableDisorders of ornithine metabolism
Official ICD-10-CM descriptor (FY2026)
Disorders of ornithine metabolism
E72.4 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Hyperammonemia-Hyperornithinemia-Homocitrullinemia syndrome
- Ornithinemia (types I, II)
- Ornithine transcarbamylase deficiency
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- hereditary choroidal dystrophy (H31.2-)
Related codes in E72
- E72.0Disorders of amino-acid transportcategory
- E72.1Disorders of sulfur-bearing amino-acid metabolismcategory
- E72.2Disorders of urea cycle metabolismcategory
- E72.3Disorders of lysine and hydroxylysine metabolism
- E72.5Disorders of glycine metabolismcategory
- E72.8Other specified disorders of amino-acid metabolismcategory
- E72.9Disorder of amino-acid metabolism, unspecified
Where this code sits
- Parent code
- E72
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.