T23.549S Guidelines & Instructional Notes: Corros first degree of unsp mult fngr, inc thumb, sqla

Instruction Source: T23.549S

Corros first degree of unsp mult fngr, inc thumb, sqla

Instruction Source: T23.549

Corrosion of first degree of unspecified multiple fingers (nail), including thumb

Instruction Source: T23.54

Corrosion of first degree of multiple fingers (nail), including thumb

Instruction Source: T23.5

Corrosion of first degree of wrist and hand

Instruction Source: T23

Burn and corrosion of wrist and hand

Instruction Source: T20-T25

Burns and corrosions of external body surface, specified by site (T20-T25)

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]

Instruction Source: S00-T88

Injury, poisoning and certain other consequences of external causes

Excludes 2 (Not Included Here)

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