ICD10
ICD-10 Code E70.2: Disorders of tyrosine 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 tyrosine 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
E70Disorders of aromatic amino-acid metabolism
currentE70
Official coding notes
Excludes1 (do not code together)
- transitory tyrosinemia of newborn (P74.5)
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
Mapped diagnoses and classifications
SNOMED_CT 413356003high
4-Hydroxyphenylpyruvate dioxygenase deficiency
Source: SNOMED International ICD-10 map
SNOMED_CT 410042009high
Alcaptonuric ochronosis
Source: SNOMED International ICD-10 map
SNOMED_CT 124287008high
Deficiency of tyrosine aminotransferase
Source: SNOMED International ICD-10 map
SNOMED_CT 237921002high
Disorder of catecholamine synthesis
Source: SNOMED International ICD-10 map
SNOMED_CT 37200009high
Disorder of tyrosine metabolism
Source: SNOMED International ICD-10 map
SNOMED_CT 410041002high
Exogenous ochronosis
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
E70.2
Replacement codes
E70.20 — Disorder of tyrosine metabolism, unspecifiedE70.21 — TyrosinemiaE70.29 — Other disorders of tyrosine metabolism
Common synonyms
Disorders of tyrosine 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.