MCMCB Pro
E77

E77Disorders of glycoprotein metabolism

Non-billable headerICD-10-CM

E77 is a non-billable header ICD-10-CM code for disorders of glycoprotein metabolism. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with E77

These codes carry an Excludes1 note pointing at E77. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E77 alone.

  • E75Disorders of sphingolipid metabolism and other lipid storage disorders

Risk adjustment

E77 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead E77

4 child codes. Green means billable.

Questions about E77

Is E77 a billable ICD-10-CM code?
No. E77 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does E77 sit in the tabular list?
Endocrine, nutritional and metabolic diseases (E00-E89), in the block Metabolic disorders (E70-E88).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.