T21.44XD Corrosion of unspecified degree of lower back, subs encntr

Instructional Notes:

T21.44XD
Description: Corrosion of unspecified degree of lower back, subs encntr
↓
T21.44
Description: Corrosion of unspecified degree of lower back
↓
T21.4
Description: Corrosion of unspecified degree of trunk
Code First:
- (T51-T65) to identify chemical and intent
Use Additional Code:
- external cause code to identify place (Y92)
↓
T21
Description: Burn and corrosion of trunk
Exclude2:
- burns and corrosion of axilla (T22.- with fifth character 4)
- burns and corrosion of scapular region (T22.- with fifth character 6)
- burns and corrosion of shoulder (T22.- with fifth character 5)
Include:
- burns and corrosion of hip region
↓
T20-T25
Description: Burns and corrosions of external body surface, specified by site (T20-T25)
Use Additional Code:
- code from category T31 or T32 to identify extent of body surface involved
Include:
- 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]
↓
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.-)