ICD10 code of Lesch-Nyhan Syndrome and ICD9 code

Lesch-Nyhan syndrome is classified under the ICD-10-CM code E79.1 for Lesch-Nyhan syndrome, while the legacy ICD-9-CM code for this condition is 277.2. These medical billing codes are essential for clinicians to document the diagnosis of this rare, X-linked metabolic disorder characterized by the overproduction of uric acid and neurological dysfunction.

What is the clinical significance of Lesch-Nyhan syndrome?

Lesch-Nyhan syndrome is a rare, inherited metabolic disorder caused by a near-complete deficiency of the enzyme hypoxanthine-guanine phosphoribosyltransferase (HGPRT). This enzymatic failure leads to the accumulation of uric acid in the blood and tissues, causing severe gout, kidney stones, and significant neurological and behavioral challenges. Because Lesch-Nyhan syndrome affects the basal ganglia, patients often experience dystonia, choreoathetosis, and the hallmark symptom of self-injurious behavior. Currently, 78 people with Lesch-Nyhan syndrome have joined the DiseaseMaps community to share their experiences and navigate the complexities of this life-altering diagnosis.

How is the diagnosis of Lesch-Nyhan syndrome coded?

In the medical coding system, precision is vital for ensuring patients receive appropriate care and insurance coverage. For Lesch-Nyhan syndrome, the following codes are utilized:

• ICD-10-CM Code: E79.1 (Lesch-Nyhan syndrome) — This is the current standard used for billing and clinical reporting worldwide.


• ICD-9-CM Code: 277.2 (Lesch-Nyhan syndrome) — While no longer used for current clinical billing, this code remains in historical medical records and research databases.

Is Lesch-Nyhan syndrome hereditary?

Yes, Lesch-Nyhan syndrome is an X-linked recessive genetic disorder, meaning the defective gene is located on the X chromosome. Because males have only one X chromosome, they are almost exclusively the ones who manifest the full clinical symptoms of the disease. Female carriers typically do not show symptoms, though they carry a 50% risk of passing the mutated HPRT1 gene to each son. A clinical geneticist can provide detailed counseling for families concerned about the inheritance patterns of Lesch-Nyhan syndrome.

What should I do if my child has been diagnosed with Lesch-Nyhan syndrome?

Receiving a diagnosis of Lesch-Nyhan syndrome is an overwhelming experience for any family. It is important to work with a multidisciplinary team, including a metabolic specialist, a neurologist, and a nephrologist, to manage the complex needs associated with the condition. Focusing on the management of uric acid levels and providing behavioral support are critical components of the care plan. You are not alone; connecting with others who understand the unique challenges of Lesch-Nyhan syndrome can provide invaluable emotional support and practical insights.

Next steps

• Consult a metabolic specialist or geneticist to confirm the diagnosis through enzyme activity testing or HPRT1 gene sequencing.


• Establish a care plan with a neurologist to manage movement disorders and a nephrologist to monitor kidney function.


• Join the DiseaseMaps.org community to connect with the 78 individuals and families currently sharing their journey with this condition.


• Reach out to the Lesch-Nyhan Syndrome Association or similar patient advocacy groups for disease-specific resources and clinical trial information.

Medical disclaimer: This information is for educational purposes only and does not constitute medical advice, diagnosis, or treatment; always consult with a qualified healthcare professional regarding your specific medical condition.

References

• NIH Genetic and Rare Diseases Information Center (GARD): Lesch-Nyhan Syndrome.


• Orphanet: Lesch-Nyhan syndrome (ORPHA: 506).


• Online Mendelian Inheritance in Man (OMIM): Hypoxanthine-guanine phosphoribosyltransferase deficiency (Entry #300322).


• National Library of Medicine (PubMed): Clinical reviews on HPRT1 deficiency and management strategies.