277: Other and unspecified disorders of metabolism
277.2 Other disorders of purine and pyrimidine metabolism
Hypoxanthine-guanine-phosphoribosyltransferase deficiency [HG-PRT deficiency]
Lesch-Nyhan syndrome
Xanthinuria
Excludes:
gout (274.00-274.9)
orotic aciduric anemia (281.4)
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