E78 vs R79.83
E78 (Disorders of lipoprotein metabolism and other lipidemias) compared with R79.83 (Abnormal findings of blood amino-acid level), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. R79.83 carries an Excludes2 note covering E78: “abnormalities of lipids (E78.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| E78Disorders of lipoprotein metabolism and other lipidemias | R79.83Abnormal findings of blood amino-acid level | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Disorders of lipoprotein metabolism and other lipidemias is a non-billable ICD-10-CM category code (E78). | Abnormal findings of blood amino-acid level is a billable ICD-10-CM diagnosis code (R79.83). |
| Includes | — | Homocysteinemia |
| Use additional code | — | code to identify any retained foreign body, if applicable (Z18.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources