Alphabetic Index FY2027

T26

Burn and corrosion confined to eye and adnexa

FY2027Chapter 19: Injury, poisoning and certain other consequences of external causes/T26–T28 Burns and corrosions confined to eye and internal organs

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

T26 is a non-billable ICD-10-CM code category for burn and corrosion confined to eye and adnexa. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are T26.0 Burn of eyelid and periocular area, T26.1 Burn of cornea and conjunctival sac, T26.2 Burn with resulting rupture and destruction of eyeball, T26.3 Burns of other specified parts of eye and adnexa and 6 more. Its coding notes include a Use additional code instruction and 2 Excludes2 entries.

7th characters

Every code below needs one of these.

The appropriate 7th character is to be added to each code from category T26

  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Guidelines tips

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

The 7th character depends on whether the patient is in active treatment, not on who sees the patient. An aftercare Z code is not used for injury aftercare.

Guidelines I.C.19.aInjuries: application of 7th charactersRead the official text

Late effects of burns are coded with 7th character S, and a current burn and a sequela of an old burn can be coded together. An external cause code is used with burns.

Guidelines I.C.19.d.7; I.C.19.d.8; I.C.19.d.9Burn sequelae and external causeRead the official text

Use additional code

Add the listed code as a secondary code, if known.

Also from chapter/block level (1 note)
Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes
  • code to identify any retained foreign body, if applicable (Z18.-)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (2 notes)
Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes
  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)

Notes

Also from chapter/block level (2 notes)
Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes
  • 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
  • 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.

More specific codes under T26 10