E86 vs T86.8422
E86 (Volume depletion) compared with T86.8422 (Corneal transplant infection, left eye), 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. T86.8422 carries an Excludes2 note covering E86: “disorders of fluid and electrolyte imbalance (E86-E87)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| E86Volume depletion | T86.8422Corneal transplant infection, left eye | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Volume depletion is a non-billable ICD-10-CM category code (E86). | Corneal transplant infection, left eye is a billable ICD-10-CM diagnosis code (T86.8422). |
| Use additional code | code(s) for any associated disorders of electrolyte and acid-base balance (E87.-) | code to specify infection code to identify other transplant complications, such as: graft-versus-host disease (D89.81-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources