2027 ICD-10-CM Diagnosis Code T26Burn and corrosion confined to eye and adnexa

ICD-10-CM Codes›S00–T88›T26-T28›T26

ICD-10-CM T26
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

T26 is a non-billable ICD-10-CM category code for burn and corrosion confined to eye and adnexa, so it cannot be submitted on claims. Use a more specific code from this category instead, such as T26.00XA, T26.00XD, T26.00XS, and T26.01XA.

Code Identity

ICD-10-CM Code
T26
Billable Status
No — Non-Billable Category
Code Describes
Burn and corrosion confined to eye and adnexa
Short Description
Burn and corrosion confined to eye and adnexa
Same as the full description in the CMS dataset.
Chapter
T26-T28
Burns and corrosions confined to eye and internal organs

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT26-T28Burns and corrosions confined to eye and internal organs
CategoryT26Burn and corrosion confined to eye and adnexa
This CodeT26Burn and corrosion confined to eye and adnexa

Specific Coding for Burn and corrosion confined to eye and adnexaOverview

Non-specific codes like T26 require more characters. Use one of these billable codes instead:

  • T26.0 for Burn of eyelid and periocular area

  • T26.00 for Burn of unspecified eyelid and periocular area

  • T26.01 for Burn of right eyelid and periocular area

  • T26.02 for Burn of left eyelid and periocular area

  • T26.1 for Burn of cornea and conjunctival sac

  • T26.10 for Burn of cornea and conjunctival sac, unspecified eye

  • T26.11 for Burn of cornea and conjunctival sac, right eye

  • T26.12 for Burn of cornea and conjunctival sac, left eye

  • T26.2 for Burn with resulting rupture and destruction of eyeball

  • T26.20 for Burn with resulting rupture and destruction of unspecified eyeball

  • T26.21 for Burn with resulting rupture and destruction of right eyeball

  • T26.22 for Burn with resulting rupture and destruction of left eyeball

  • T26.3 for Burns of other specified parts of eye and adnexa

  • T26.30 for Burns of other specified parts of unspecified eye and adnexa

  • T26.31 for Burns of other specified parts of right eye and adnexa

  • T26.32 for Burns of other specified parts of left eye and adnexa

  • T26.4 for Burn of eye and adnexa, part unspecified

  • T26.40 for Burn of unspecified eye and adnexa, part unspecified

  • T26.41 for Burn of right eye and adnexa, part unspecified

  • T26.42 for Burn of left eye and adnexa, part unspecified

  • T26.5 for Corrosion of eyelid and periocular area

  • T26.50 for Corrosion of unspecified eyelid and periocular area

  • T26.51 for Corrosion of right eyelid and periocular area

  • T26.52 for Corrosion of left eyelid and periocular area

  • T26.6 for Corrosion of cornea and conjunctival sac

  • T26.60 for Corrosion of cornea and conjunctival sac, unspecified eye

  • T26.61 for Corrosion of cornea and conjunctival sac, right eye

  • T26.62 for Corrosion of cornea and conjunctival sac, left eye

  • T26.7 for Corrosion with resulting rupture and destruction of eyeball

  • T26.70 for Corrosion with resulting rupture and destruction of unspecified eyeball

  • T26.71 for Corrosion with resulting rupture and destruction of right eyeball

  • T26.72 for Corrosion with resulting rupture and destruction of left eyeball

  • T26.8 for Corrosions of other specified parts of eye and adnexa

  • T26.80 for Corrosions of other specified parts of unspecified eye and adnexa

  • T26.81 for Corrosions of other specified parts of right eye and adnexa

  • T26.82 for Corrosions of other specified parts of left eye and adnexa

  • T26.9 for Corrosion of eye and adnexa, part unspecified

  • T26.90 for Corrosion of unspecified eye and adnexa, part unspecified

  • T26.91 for Corrosion of right eye and adnexa, part unspecified

  • T26.92 for Corrosion of left eye and adnexa, part unspecified

Coding GuidelinesGuidance

The ICD-10-CM makes a distinction between burns and corrosions. The burn codes are for thermal burns, except sunburns, that come from a heat source, such as a fire or hot appliance. The burn codes are also for burns resulting from electricity and radiation. Corrosions are burns due to chemicals. The guidelines are the same for burns and corrosions.

Sequence first the code that reflects the highest degree of burn when more than one burn is present.

  • When the reason for the admission or encounter is for treatment of external multiple burns, sequence first the code that reflects the burn of the highest degree.
  • When a patient has both internal and external burns, the circumstances of admission govern the selection of the principal diagnosis or first-listed diagnosis.
  • When a patient is admitted for burn injuries and other related conditions such as smoke inhalation and/or respiratory failure, the circumstances of admission govern the selection of the principal or first-listed diagnosis.

Burns of the eye and internal organs (T26-T28) are classified by site, but not by degree.

Classify burns of the same local site (three-character category level, T20-T28) but of different degrees to the subcategory identifying the highest degree recorded in the diagnosis.

The appropriate 7th character is to be added to each code from block Burn and corrosion confined to eye and adnexa (T26). Use the following options for the applicable episode of care:

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

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to T26: its own notes plus those printed at block T20-T32 and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block T20-T32 applies to 2,584 codes
  • burns (thermal) from electrical heating appliances
  • burns (thermal) from electricity
  • burns (thermal) from flame
  • burns (thermal) from friction
  • burns (thermal) from hot air and hot gases
  • burns (thermal) from hot objects
  • burns (thermal) from lightning
  • burns (thermal) from radiation
  • chemical burn [corrosion] (external) (internal)
  • scalds

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block T20-T32 applies to 2,584 codes
  • erythema [dermatitis] ab igne (L59.0)
  • radiation-related disorders of the skin and subcutaneous tissue (L55-L59)
  • sunburn (L55.-)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • 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.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • The appropriate 7th character is to be added to each code from category T26
Values for category T26 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name T26, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming T26: they are not reported together with it, unless the two conditions are unrelated.

  • H10.21 Acute toxic conjunctivitis
    burn and corrosion of eye and adnexa (T26.-)

Excludes2 1

These codes carry an Excludes2 note naming T26: its condition is not part of those codes, and both may be reported when the patient has both.

  • T20 Burn and corrosion of head, face, and neck
    burn and corrosion of eye and adnexa (T26.-)

Patient EducationClinical

Burns

A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Scalds from hot liquids and steam, building fires and flammable liquids and gases are the most common causes of burns. Another kind is an inhalation injury, caused by breathing smoke.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About T26Overview

What is the ICD-10 code for burn and corrosion confined to eye and adnexa?

T26 is the ICD-10-CM category for burn and corrosion confined to eye and adnexa, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is T26 (Burn and corrosion confined to eye and adnexa) a billable code?

No. This is a category header that groups the codes for burn and corrosion confined to eye and adnexa, and headers cannot be submitted on claims. Claims for burn and corrosion confined to eye and adnexa need a more specific code from this category, such as T26.00XA, T26.00XD, and T26.00XS.