Corrosion of second degree of multiple left fingers (nail), including thumb
Requires 7th character
T23.642 requires a 7th character to be reported. Choose a complete code below.
Inclusion terms
Includes (from T23)
- 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]
- Note: Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- Note: The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Excludes2
Not included here — may be reported together when both conditions exist.
Code first
Sequence the underlying condition first.
Use additional code
Add a code to identify the following, if applicable.
7th character
This code requires a 7th character (defined at T23). Use the placeholder "X" for missing positions.
| Character | Meaning |
|---|---|
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
Parent code
- T23.64Corrosion of second degree of multiple fingers (nail), including thumbNeeds 7th char
More specific codes T23.642
- T23.642ACorrosion of second degree of multiple left fingers (nail), including thumb, initial encounterBillable
- T23.642DCorrosion of second degree of multiple left fingers (nail), including thumb, subsequent encounterBillable
- T23.642SCorrosion of second degree of multiple left fingers (nail), including thumb, sequelaBillable