T20 vs T86.8491
T20 (Burn and corrosion of head, face, and neck) compared with T86.8491 (Unspecified complication of corneal transplant, right 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. T86.8491 carries an Excludes2 note covering T20: “burns and corrosions from local applications and irradiation (T20-T32)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| T20Burn and corrosion of head, face, and neck | T86.8491Unspecified complication of corneal transplant, right eye | |
|---|---|---|
| Billing status | Non-billable header Report instead: T20.00XA, T20.00XD, T20.00XS, T20.011A, T20.011D | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Burn and corrosion of head, face, and neck is a non-billable ICD-10-CM category code (T20). | Unspecified complication of corneal transplant, right eye is a billable ICD-10-CM diagnosis code (T86.8491). |
| 7th character | The appropriate 7th character is to be added to each code from category T20 | — |
| Includes | burns and corrosions of first degree [erythema] burns and corrosions of second degree [blisters][epidermal loss] burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss] | — |
| Use additional code | code from category T31 or T32 to identify extent of body surface involved | code to identify other transplant complications, such as: graft-versus-host disease (D89.81-) malignancy associated with organ transplant (C80.2) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources