2026 ICD-10-CM Diagnosis Code E77Disorders of glycoprotein metabolism

ICD-10-CM Codes›E00–E89›E70-E88›E77

ICD-10-CM E77
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E77 is a non-billable ICD-10-CM category code for disorders of glycoprotein metabolism, so it cannot be submitted on claims. Use a more specific code from this category instead, such as E77.0, E77.1, E77.8, and E77.9.

Code Identity

ICD-10-CM Code
E77
Billable Status
No — Non-Billable Category
Code Describes
Disorders of glycoprotein metabolism
Chapter
E70-E88
Metabolic disorders

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE70-E88Metabolic disorders
CategoryE77Disorders of glycoprotein metabolism
This CodeE77Disorders of glycoprotein metabolism

Specific Coding for Disorders of glycoprotein metabolismOverview

Non-specific codes like E77 require more characters. Use one of these billable codes instead:

  • Use E77.0 for Defects in post-translational modification of lysosomal enzymes

  • Use E77.1 for Defects in glycoprotein degradation

  • Use E77.8 for Other disorders of glycoprotein metabolism

  • Use E77.9 for Disorder of glycoprotein metabolism, unspecified

Patient EducationClinical

Carbohydrate Metabolism Disorders

Metabolism is the process your body uses to make energy from the food you eat. Food is made up of proteins, carbohydrates, and fats. Chemicals in your digestive system (enzymes) break the food parts down into sugars and acids, your body's fuel. Your body can use this fuel right away, or it can store the energy in your body tissues.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About E77Overview

Is E77 (Disorders of glycoprotein metabolism) a billable code?

No. This is a category header that groups the codes for disorders of glycoprotein metabolism, and headers cannot be submitted on claims. Claims for disorders of glycoprotein metabolism need a more specific code from this category, such as E77.0, E77.1, and E77.8.