T20.49XA Corros unsp deg mult sites of head, face, and neck, init
Instructional Notes:
T20.49XA Description: Corros unsp deg mult sites of head, face, and neck, init ↓
T20.49 Description: Corrosion of unspecified degree of multiple sites of head, face, and neck ↓
T20.4 Description: Corrosion of unspecified degree of head, face, and neck Code First:
(T51-T65) to identify chemical and intent
Use Additional Code:
external cause code to identify place (Y92)
↓
T20 Description: Burn and corrosion of head, face, and neck Exclude2:
burn and corrosion of ear drum (T28.41, T28.91)
burn and corrosion of eye and adnexa (T26.-)
burn and corrosion of mouth and pharynx (T28.0)
↓
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.-)