ICD-10-CM>E00-E89>E70-E88>E77E77Disorders of glycoprotein metabolismNon-Billable/Non-SpecificCodesE77.0Defects in post-translational modification of lysosomal enzymesE77.1Defects in glycoprotein degradationE77.8Other disorders of glycoprotein metabolismE77.9Disorder of glycoprotein metabolism, unspecified