ICD10BillableValid for clinical use
ICD-10 Code E79.1: Lesch-Nyhan syndrome
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. 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 lesch-nyhan syndrome in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
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.
Code hierarchy
chapter
4Endocrine, nutritional and metabolic diseases (E00-E89)
block
E70-E88Metabolic disorders
category
E79Disorders of purine and pyrimidine metabolism
currentE79
Official coding notes
Inclusion terms
- HGPRT deficiency
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
EndocrinologistGeneral Physician
Related codes
Sibling codes
Mapped diagnoses and classifications
SNOMED_CT 124275001high
Deficiency of hypoxanthine phosphoribosyltransferase
Source: SNOMED International ICD-10 map
SNOMED_CT 10406007high
Lesch-Nyhan syndrome
Source: SNOMED International ICD-10 map
SNOMED_CT 1259654009high
Chorea due to Lesch-Nyhan syndrome
Source: SNOMED International ICD-10 map
SNOMED_CT 1260390003high
Dystonia due to Lesch Nyhan syndrome
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
E79.1
Common synonyms
Lesch-Nyhan syndrome
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.