ICD10
ICD-10 Code E72.2: Disorders of urea cycle metabolism
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Endocrine, nutritional and metabolic diseases (E00-E89).
When is it used?
- May be used when a clinician documents disorders of urea cycle metabolism in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
4Endocrine, nutritional and metabolic diseases (E00-E89)
block
E70-E88Metabolic disorders
category
E72Other disorders of amino-acid metabolism
currentE72
Official coding notes
Excludes1 (do not code together)
- disorders of ornithine metabolism (E72.4)
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
EndocrinologistGeneral Physician
Related codes
Sibling codes
E72.0Disorders of amino-acid transportE72.1Disorders of sulfur-bearing amino-acid metabolismE72.3Disorders of lysine and hydroxylysine metabolismbillableE72.4Disorders of ornithine metabolismbillableE72.5Disorders of glycine metabolismE72.8Other specified disorders of amino-acid metabolismE72.9Disorder of amino-acid metabolism, unspecifiedbillable
Mapped diagnoses and classifications
SNOMED_CT 1388705009high
Acute neonatal citrullinaemia type I
Source: SNOMED International ICD-10 map
SNOMED_CT 23501004high
Arginase deficiency
Source: SNOMED International ICD-10 map
SNOMED_CT 41013004high
Argininosuccinate lyase deficiency
Source: SNOMED International ICD-10 map
SNOMED_CT 765329008high
Carbamoyl-phosphate synthetase 1 deficiency
Source: SNOMED International ICD-10 map
SNOMED_CT 429735007high
Citrin deficiency
Source: SNOMED International ICD-10 map
SNOMED_CT 398680004high
Citrullinaemia
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
E72.2
Replacement codes
E72.20 — Disorder of urea cycle metabolism, unspecifiedE72.21 — ArgininemiaE72.22 — Arginosuccinic aciduriaE72.23 — CitrullinemiaE72.29 — Other disorders of urea cycle metabolism
Common synonyms
Disorders of urea cycle metabolism
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.