E77: Disorders of glycoprotein metabolism
Codes under E77 (Disorders of glycoprotein metabolism). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| E77.0 | Defects in post-translational modification of lysosomal enzymes | ✓ |
| E77.0 | Defects in post-translational modification of lysosomal enzymes | ✓ |
| E77.1 | Defects in glycoprotein degradation | ✓ |
| E77.1 | Defects in glycoprotein degradation | ✓ |
| E77.8 | Other disorders of glycoprotein metabolism | ✓ |
| E77.8 | Other disorders of glycoprotein metabolism | ✓ |
| E77.9 | Disorder of glycoprotein metabolism, unspecified | ✓ |
| E77.9 | Disorder of glycoprotein metabolism, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code E77?
E77 is an ICD-10-CM category covering Disorders of glycoprotein metabolism. It contains 8 more specific diagnosis codes, 8 of which are billable.
Is E77 a billable code?
No — E77 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example E77.0 — Defects in post-translational modification of lysosomal enzymes). 8 of the 8 codes under E77 are billable.
What codes fall under E77?
E77 includes E77.0, E77.0, E77.1, E77.1, E77.8, plus 3 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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