Complete ICD-10-CM coding and documentation guide for icd-10 coding for hyperammonemia includes clinical validation requirements, medical necessity guidelines, and coding policies.
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Essential facts and insights about ICD-10 Coding for Hyperammonemia
Use ICD-10 code E72.4 for disorders of ornithine metabolism, ensuring proper documentation in clinical notes.
Additional codes that may be used with this diagnosis
Hepatic encephalopathy
Use when hyperammonemia is due to liver disease.
The ICD-10 code for hyperammonemia depends on the underlying cause. E72.4 is used for disorders of ornithine metabolism, while P74.6 is for transitory hyperammonemia of newborn.
Hyperammonemia documentation should include ammonia levels, underlying cause, and any genetic test results confirming urea cycle disorders.