T31.23 ICD-10-CA code: Burns involving 20-29% of body surface with 20-29% third degree burns
T31.23 is the ICD-10-CA code for “Burns involving 20-29% of body surface with 20-29% third degree burns” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
T31.23Burns involving 20-29% of body surface with 20-29% third degree burns
Short description: Burn inv 20 29% body surf 20 29% 3rd deg
ICD-10-CA · Canada · Also written T3123
Notes for T31.23
As CIHI prints them, with any note T31.23 takes from the headings above it.
Includes
- Burns:• air and hot gases• electrical heating appliances• electricity• flame• friction• lightning• objects• radiationchemical burns [corrosions] (external)(internal)scaldsFrom T20-T32 Burns and corrosions
Excludes
Conditions classified elsewhere.
- Erythema [dermatitis] ab igne (L59.0)radiation-related disorders of the skin and subcutaneous tissue (L55-L59)sunburn (L55.-)From T20-T32 Burns and corrosions
- Birth trauma (P10-P15)obstetric trauma (O70-O71)From Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98)
Note
- This category is to be used as the primary code only when the site of the burn is unspecified. It may be used as a supplementary code with categories (T20-T25, T29) when the site is specified.From T31 Burns classified according to extent of body surface involved
- 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 multiple or unspecified body regions as well as poisoning and certain other consequences of external causes.Where multiple sites of injury are specified in the titles, the word "with" indicates involvement of both sites, and the word "and" indicates involvement of either or both sites.The principle of multiple coding of injuries should be followed wherever possible.Combination categories for multiple injuries is provided for use when there are insufficient detail as to the nature of the individual conditions, or for primary tabulation purposes when it is more convenient to record single code; otherwise, the component injuries should be coded separately.Reference should also be made to the coding rules and guidelines.The blocks of the S-section as well as (T00-T14 and T90-T98) contain injuries at the three-character level classified by type as follows:Superficial injury including:abrasionblister (nonthermal)contusion, including bruise and haematomainjury from superficial foreign body (splinter) without major open woundinsect bite (nonvenomous)Open wound including:animal bitecutlacerationpuncture wound:• NOS• with (penetrating) foreign bodyFracture including:Fracture:closed: comminuted, depressed, elevated, fissured, greenstick, impacted, linear, simple, slipped epiphysis, spiral — with or without delayed healingdislocateddisplacedFracture:open: compound, infected, missile, puncture, with foreign body — with or without delayed healingExcludes:malunion of fracture (M84.0)nonunion of fracture [pseudoarthrosis] (M84.1)pathological fracture (M84.4):• with osteoporosis (M80.-)stress fracture (M84.3)Dislocation, sprain and strain including:avulsion, laceration, sprain, strain, traumatic: haemarthosis, rupture, subluxation, tear of cartilage, joint (capsule), ligamentInjury to nerves and spinal cord including:complete or incomplete lesion of spinal cordlesion incontinuity of nerves and spinal cordtraumatic:• division of nerve• haematomyelia• paralysis (transient)• paraplegia• quadriplegiaInjury to blood vessels includingavulsion, cut, laceration, traumatic: aneurysm or fistula (arteriovenous), arterial haematoma, rupture of blood vesselsInjury of muscle, fascia and tendon including:avulsion, cut, laceration, strain, traumatic rupture of muscle, fascia and tendonCrushing InjuryTraumatic amputationInjury to internal organs including:blast injuries, bruise, concussion injuries, crushing, laceration, traumatic: haematoma, puncture, rupture, tear of internal organsOther and unspecified injuriesFrom Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98)
Where T31.23 sits
- 1ChapterChapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98)
- 2Block T20-T32Burns and corrosions
- 3Block T29-T32Burns and corrosions of multiple and unspecified body regions
- 4Category T31Burns classified according to extent of body surface involved
- 5Subcategory T31.2Burns involving 20 - 29% of body surface
- 6Valid code T31.23Burns involving 20-29% of body surface with 20-29% third degree burns
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code T31.23 mean?
T31.23 is the ICD-10-CA code for “Burns involving 20-29% of body surface with 20-29% third degree burns” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is T31.23 in ICD-10-CA?
T31.23 sits under T31.2 Burns involving 20 - 29% of body surface, within T31 Burns classified according to extent of body surface involved, within T29-T32 Burns and corrosions of multiple and unspecified body regions, within T20-T32 Burns and corrosions, within Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98).
What coding notes apply to T31.23?
ICD-10-CA lists Note, Includes, Excludes notes for T31.23, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.