T34.40XA Frostbite with tissue necrosis of unsp arm, init encntr

Instructional Notes:

T34.40XA
Description: Frostbite with tissue necrosis of unsp arm, init encntr
↓
T34.40
Description: Frostbite with tissue necrosis of unspecified arm
↓
T34.4
Description: Frostbite with tissue necrosis of arm
Exclude2:
- frostbite with tissue necrosis of wrist and hand (T34.5-)
↓
T34
Description: Frostbite with tissue necrosis
↓
T33-T34
Description: Frostbite (T33-T34)
Exclude2:
- hypothermia and other effects of reduced temperature (T68, T69.-)
↓
S00-T88
Description: Injury, poisoning and certain other consequences of external causes
Exclude2:
- birth trauma (P10-P15)
- obstetric trauma (O70-O71)
Notes:
- 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
Use Additional Code:
- code to identify any retained foreign body, if applicable (Z18.-)