E72.4
Disorders of ornithine metabolism
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 14 never code together
E72code
E70-E88block
E00-E89chapter
Excludes1
- transitory endocrine and metabolic disorders specific to newborn (P70-P74)P70-P74
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 4
E72.4code
Inclusion terms
- Hyperammonemia-Hyperornithinemia-Homocitrullinemia syndrome
- Ornithinemia (types I, II)
- Ornithine transcarbamylase deficiency
E00-E89chapter
Notes
- All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.E05.8E07.0E16-E31E34.-
Index entries leading here 8
- Disorder (of) — see also Disease
- Deficiency, deficient
- ornithine transcarbamylase E72.4
- Disturbance (s) — see also Disease
- Hyperaminoaciduria
- ornithine E72.4
- Syndrome — see also Disease
- hyperammonemia-hyperornithinemia-homocitrullinemia E72.4
- Hyperornithinemia E72.4
- Ornithine metabolism disorder E72.4
- Ornithinemia (Type I) (Type II) E72.4
Alongside this code 7 same parent — E72
E72.0 Disorders of amino-acid transport category E72.1 Disorders of sulfur-bearing amino-acid metabolism category E72.2 Disorders of urea cycle metabolism category E72.3 Disorders of lysine and hydroxylysine metabolism E72.5 Disorders of glycine metabolism category E72.8 Other specified disorders of amino-acid metabolism category E72.9 Disorder of amino-acid metabolism, unspecified
Medications 1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.