code to identify any retained foreign body, if applicable (Z18.-)
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
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.
T33-T34 · Frostbite (T33-T34)
Excludes 2
hypothermia and other effects of reduced temperature (T68, T69.-)
