MCMedicalCodingSoftware
E79.1

E79.1: Lesch-Nyhan syndrome

Billable / specific codeICD-10-CM

E79.1 is a billable, specific ICD-10-CM code for lesch-nyhan syndrome. It is valid for submission on a claim.

Check E79.1 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • HGPRT deficiency

Excludes1 inherited from the categories above E79.1

A category’s note binds every code beneath it.

Written on E79: Disorders of purine and pyrimidine metabolism

  • Ataxia-telangiectasia (Q87.19)
  • Bloom's syndrome (Q82.8)
  • Cockayne's syndrome (Q87.19)
  • calculus of kidney (N20.0)
  • combined immunodeficiency disorders (D81.-)
  • Fanconi's anemia (D61.09)
  • gout (M1A.-, M10.-)
  • orotaciduric anemia (D53.0)
  • progeria (E34.8)
  • Werner's syndrome (E34.8)
  • xeroderma pigmentosum (Q82.1)

Other codes that can never be billed with E79.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • D53.0Protein deficiency anemia
  • E72Other disorders of amino-acid metabolism

Risk adjustment

E79.1 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 50 Amyloidosis, Porphyria, and Other Specified Metabolic Disorders0.648 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Alphabetic index entries that lead here

  • Lesch-Nyhan syndrome
  • Deficiency, deficient›hypoxanthine-(guanine)-phosphoribosyltransferase (HG- PRT) (total H-PRT)
  • Arthropathy›gouty›in›Lesch-Nyhan syndrome

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under E79

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.