T28.912A Corrosions of left ear drum, initial encounter

Billable ICD-10-CM code, FY2026.

Built from T28.912 with 7th character A (initial encounter).

Applies from T28 Burn and corrosion of other internal organs

Use additional code

• external cause code to identify the source and intent of the burn (X00-X19, X75-X77, X96-X98)
• external cause code to identify place (Y92)

7th character note

• The appropriate 7th character is to be added to each code from category T28

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from T28.9 Corrosions of other and unspecified internal organs

Code first

• (T51-T65) to identify chemical and intent

Code annotations containing back-references to T28.912A

Back-references to T28.91

• Type 2 Excludes: T20 Burn and corrosion of head, face, and neck ("burn and corrosion of ear drum (T28.41, T28.91)")
• Type 2 Excludes: T20.41 Corrosion of unspecified degree of ear [any part, except ear drum] ("corrosion of ear drum (T28.91-)")
• Type 2 Excludes: T20.51 Corrosion of first degree of ear [any part, except ear drum] ("corrosion of ear drum (T28.91-)")
• Type 2 Excludes: T20.61 Corrosion of second degree of ear [any part, except ear drum] ("corrosion of ear drum (T28.91-)")
• Type 2 Excludes: T20.71 Corrosion of third degree of ear [any part, except ear drum] ("corrosion of ear drum (T28.91-)")

Back-references to T28

• Type 1 Excludes: T66 Radiation sickness, unspecified ("burns (T20-T31)")
• Type 2 Excludes: T67 Effects of heat and light ("burns (T20-T31)")
• Type 2 Excludes: T75 Other and unspecified effects of other external causes ("burns (electric) (T20-T31)")

Nearby codes

• T28.911 Corrosions of right ear drum
• T28.911A Corrosions of right ear drum, initial encounter
• T28.911D Corrosions of right ear drum, subsequent encounter
• T28.911S Corrosions of right ear drum, sequela
• T28.912 Corrosions of left ear drum
• T28.912A Corrosions of left ear drum, initial encounter (this code)
• T28.912D Corrosions of left ear drum, subsequent encounter
• T28.912S Corrosions of left ear drum, sequela
• T28.919 Corrosions of unspecified ear drum
• T28.919A Corrosions of unspecified ear drum, initial encounter
• T28.919D Corrosions of unspecified ear drum, subsequent encounter