R77: Other abnormalities of plasma proteins
Codes under R77 (Other abnormalities of plasma proteins). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| R77.0 | Abnormality of albumin | ✓ |
| R77.0 | Abnormality of albumin | ✓ |
| R77.1 | Abnormality of globulin | ✓ |
| R77.1 | Abnormality of globulin | ✓ |
| R77.2 | Abnormality of alphafetoprotein | ✓ |
| R77.2 | Abnormality of alphafetoprotein | ✓ |
| R77.8 | Other specified abnormalities of plasma proteins | ✓ |
| R77.8 | Other specified abnormalities of plasma proteins | ✓ |
| R77.9 | Abnormality of plasma protein, unspecified | ✓ |
| R77.9 | Abnormality of plasma protein, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code R77?
R77 is an ICD-10-CM category covering Other abnormalities of plasma proteins. It contains 10 more specific diagnosis codes, 10 of which are billable.
Is R77 a billable code?
No — R77 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 R77.0 — Abnormality of albumin). 10 of the 10 codes under R77 are billable.
What codes fall under R77?
R77 includes R77.0, R77.0, R77.1, R77.1, R77.2, plus 5 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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