ICD-10-CM Tabular Index · Chapter 19 · FY 2027 T26–T28
Burns and corrosions confined to eye and internal organs (T26-T28) ICD-10-CM
The T26–T28 section covers burns and corrosions confined to eye and internal organs with 241 ICD-10-CM diagnosis codes, of which 168 are billable in fiscal year 2027. The section is organized into the 3 code ranges listed below.
✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the T26–T28 Code Range
These injuries are burns or corrosions confined to the eye and nearby parts, the breathing passages, or internal organs.
T26 separates burns from corrosions, then identifies the affected eye part or damage to the eyeball. T27 makes the same distinction for breathing passages, separating the voice box and windpipe from injuries that also involve the lung. T28 separates burns from corrosions of the mouth and throat, digestive tract, internal urinary and reproductive organs, and other internal organs.
Each category uses a seventh character to distinguish an initial encounter (A), a subsequent encounter (D), or a later effect called a sequela (S).
Questions About This Page
How many codes are in the T26-T28 range?
The T26-T28 range contains 241 ICD-10-CM diagnosis codes in FY 2027. 168 of them are billable, and the rest are category headers that organize the section.
What conditions does T26-T28 cover?
The range covers burns and corrosions confined to eye and internal organs. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
The appropriate 7th character is to be added to each code from category T26
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
external cause code to identify the source and intent of the burn X00X19X75X77X96X98
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
The appropriate 7th character is to be added to each code from category T27
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
external cause code to identify the source and intent of the burn X00X19X75X77X96X98
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
The appropriate 7th character is to be added to each code from category T28
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
