E77Header code — not billable

Disorders of glycoprotein metabolism

Chapter
4. Endocrine, nutritional and metabolic diseases
Category
E77
Effective date
October 1, 2026

Related codes in category E77

E77.0Defects in post-translational mod of lysosomal enzymesYesE77.1Defects in glycoprotein degradationYesE77.8Other disorders of glycoprotein metabolismYesE77.9Disorder of glycoprotein metabolism, unspecifiedYes

Frequently asked questions

What is ICD-10 code E77?

E77 is an ICD-10-CM diagnosis code for Disorders of glycoprotein metabolism.

Is E77 a billable code?

No. E77 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is E77 in?

E77 falls under Chapter 4: Endocrine, nutritional and metabolic diseases.

When did E77 become effective?

E77 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to E77?

E77 belongs to category E77, which includes 4 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.