ICD-10-CM · Chapter 4
E72..20 Disorder of urea cycle metabolism, unspecified
Includes
- Hyperammonemia
Excludes 1 (cannot be coded together)
- hyperammonemia-hyperornithinemia-homocitrullinemia syndrome E72.4
- transient hyperammonemia of newborn (P74.6)
Last reviewed: September 2026