T28.5
T28.5: Corrosion of mouth and pharynx
Non-billable headerICD-10-CM
T28.5 is a non-billable header ICD-10-CM code for corrosion of mouth and pharynx. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category T28
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Alphabetic index entries that lead here
- Corrosion›mouth
- Corrosion›pharynx
- Corrosion›throat(meaning pharynx)
- Corrosion›tongue
- Corrosion›tonsil(s)
- Corrosion›internal organ›mouth
- Corrosion›internal organ›pharynx
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead T28.5
3 child codes. Green means billable.
Other codes under T28
- T28.0Burn of mouth and pharynx
- T28.1Burn of esophagus
- T28.2Burn of other parts of alimentary tract
- T28.3Burn of internal genitourinary organs
- T28.4Burns of other and unspecified internal organs
- T28.6Corrosion of esophagus
- T28.7Corrosion of other parts of alimentary tract
- T28.8Corrosion of internal genitourinary organs
- T28.9Corrosions of other and unspecified internal organs