T20.412

Corrosion of unspecified degree of left ear [any part, except ear drum]

Requires 7th character

T20.412 requires a 7th character to be reported. Choose a complete code below.

Inclusion terms

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]
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
Note: 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.

Not included here — may be reported together when both conditions exist.

corrosion of ear drum (T28.91-) (from T20.41)
birth trauma (P10-P15) (from T20)
obstetric trauma (O70-O71) (from T20)
burn and corrosion of ear drum (T28.41, T28.91) (from T20)
burn and corrosion of eye and adnexa (T26.-) (from T20)
burn and corrosion of mouth and pharynx (T28.0) (from T20)

Sequence the underlying condition first.

Add a code to identify the following, if applicable.

external cause code to identify place (Y92) (from T20.4)
code to identify any retained foreign body, if applicable (Z18.-) (from T20)
code from category T31 or T32 to identify extent of body surface involved (from T20)

This code requires a 7th character (defined at T20). Use the placeholder "X" for missing positions.

T20.41Corrosion of unspecified degree of ear [any part, except ear drum]Needs 7th char

T20.412ACorrosion of unspecified degree of left ear [any part, except ear drum], initial encounterBillable
T20.412DCorrosion of unspecified degree of left ear [any part, except ear drum], subsequent encounterBillable
T20.412SCorrosion of unspecified degree of left ear [any part, except ear drum], sequelaBillable

T20.411Corrosion of unspecified degree of right ear [any part, except ear drum]Needs 7th char
T20.419Corrosion of unspecified degree of unspecified ear [any part, except ear drum]Needs 7th char