ICD-10-CM > E00-E89 > E70-E88 > E79 > E79.8 E79.8 Other disorders of purine and pyrimidine metabolism Non-Billable/Non-Specific Codes E79.81Aicardi-Goutières syndromeE79.82Hereditary xanthinuriaE79.89Other specified disorders of purine and pyrimidine metabolism