T28.5 – Corrosion of mouth and pharynx
ICD-10-CM 2027 diagnosis code · Burns and corrosions confined to eye and internal organs
- Code
T28.5(claims format:T285)- Description
- Corrosion of mouth and pharynx
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
- Block
- T26-T28 Burns and corrosions confined to eye and internal organs
- Parent codes
- T28
Billable codes under T28.5
T28.5 is a header code and cannot be used on claims. Choose the most specific code:
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).
| Character | Meaning |
|---|---|
A | initial encounter |
D | subsequent encounter |
S | sequela |
Notes for T28.5
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
T28 – Burn and corrosion of other internal organs
- The appropriate 7th character is to be added to each code from category T28
Index terms for T28.5
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in T28
- T28.0 – Burn of mouth and pharynxHeader
- T28.1 – Burn of esophagusHeader
- T28.2 – Burn of other parts of alimentary tractHeader
- T28.3 – Burn of internal genitourinary organsHeader
- T28.4 – Burns of other and unspecified internal organsHeader
- T28.6 – Corrosion of esophagusHeader
- T28.7 – Corrosion of other parts of alimentary tractHeader
- T28.8 – Corrosion of internal genitourinary organsHeader
- T28.9 – Corrosions of other and unspecified internal organsHeader
Frequently asked questions
What is ICD-10 code T28.5?
T28.5 is the ICD-10-CM code for corrosion of mouth and pharynx, in the block T26-T28 (Burns and corrosions confined to eye and internal organs).
Is T28.5 a billable code?
No. T28.5 is a header code with more specific child codes; report one of the billable codes listed above.
What category does T28.5 belong to?
It belongs to category T28 – Burn and corrosion of other internal organs.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.