ICD-10-CM > E00-E89 > E70-E88 > E80 E80 Disorders of porphyrin and bilirubin metabolism Non-Billable/Non-Specific Includes defects of catalase and peroxidase Codes E80.0Hereditary erythropoietic porphyriaE80.1Porphyria cutanea tardaE80.2Other and unspecified porphyriaE80.20Unspecified porphyriaE80.21Acute intermittent (hepatic) porphyriaE80.29Other porphyriaE80.3Defects of catalase and peroxidaseE80.4Gilbert syndromeE80.5Crigler-Najjar syndromeE80.6Other disorders of bilirubin metabolismE80.7Disorder of bilirubin metabolism, unspecified