T26.9 – Corrosion of eye and adnexa, part unspecified
ICD-10-CM 2027 diagnosis code · Burns and corrosions confined to eye and internal organs
- Code
T26.9(claims format:T269)- Description
- Corrosion of eye and adnexa, part unspecified
- 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
- T26
Billable codes under T26.9
T26.9 is a header code and cannot be used on claims. Choose the most specific code:
- T26.90 – Corrosion of unspecified eye and adnexa, part unspecifiedHeader (more codes below)
- T26.91 – Corrosion of right eye and adnexa, part unspecifiedHeader (more codes below)
- T26.92 – Corrosion of left eye and adnexa, part unspecifiedHeader (more codes below)
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 T26.9
- external cause code to identify place (Y92)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
T26 – Burn and corrosion confined to eye and adnexa
- The appropriate 7th character is to be added to each code from category T26
Index terms for T26.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in T26
- T26.0 – Burn of eyelid and periocular areaHeader
- T26.1 – Burn of cornea and conjunctival sacHeader
- T26.2 – Burn with resulting rupture and destruction of eyeballHeader
- T26.3 – Burns of other specified parts of eye and adnexaHeader
- T26.4 – Burn of eye and adnexa, part unspecifiedHeader
- T26.5 – Corrosion of eyelid and periocular areaHeader
- T26.6 – Corrosion of cornea and conjunctival sacHeader
- T26.7 – Corrosion with resulting rupture and destruction of eyeballHeader
- T26.8 – Corrosions of other specified parts of eye and adnexaHeader
Frequently asked questions
What is ICD-10 code T26.9?
T26.9 is the ICD-10-CM code for corrosion of eye and adnexa, part unspecified, in the block T26-T28 (Burns and corrosions confined to eye and internal organs).
Is T26.9 a billable code?
No. T26.9 is a header code with more specific child codes; report one of the billable codes listed above.
What category does T26.9 belong to?
It belongs to category T26 – Burn and corrosion confined to eye and adnexa.
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.