Note: The following fourth-character subdivisions are for use with categories T20-T25, T29 and T30:
-
.0
-
Unspecified degree
-
.1
-
First degree [Erythema]
-
.2
-
Second degree [Blisters, epidermal loss]
-
.3
-
Third degree [Deep necrosis of underlying tissue][Full-thickness skin loss]