Burns classified according to extent of body surface involved (T31) ICD-10-CM
The T31 code range covers burns classified according to extent of body surface involved with 65 ICD-10-CM diagnosis codes. 55 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the T31 Range 65 codes · 55 billable
- T31 Burns classified according to extent of body surface involvedNon-billable
- T31.0 Burns involving less than 10% of body surface
- T31.1 Burns involving 10-19% of body surfaceNon-billable
- T31.10 Burns involving 10-19% of body surface with 0% to 9% third degree burns
- T31.11 Burns involving 10-19% of body surface with 10-19% third degree burns
- T31.2 Burns involving 20-29% of body surfaceNon-billable
- T31.20 Burns involving 20-29% of body surface with 0% to 9% third degree burns
- T31.21 Burns involving 20-29% of body surface with 10-19% third degree burns
- T31.22 Burns involving 20-29% of body surface with 20-29% third degree burns
- T31.3 Burns involving 30-39% of body surfaceNon-billable
- T31.30 Burns involving 30-39% of body surface with 0% to 9% third degree burns
- T31.31 Burns involving 30-39% of body surface with 10-19% third degree burns
- T31.32 Burns involving 30-39% of body surface with 20-29% third degree burns
- T31.33 Burns involving 30-39% of body surface with 30-39% third degree burns
- T31.4 Burns involving 40-49% of body surfaceNon-billable
- T31.40 Burns involving 40-49% of body surface with 0% to 9% third degree burns
- T31.41 Burns involving 40-49% of body surface with 10-19% third degree burns
- T31.42 Burns involving 40-49% of body surface with 20-29% third degree burns
- T31.43 Burns involving 40-49% of body surface with 30-39% third degree burns
- T31.44 Burns involving 40-49% of body surface with 40-49% third degree burns
- T31.5 Burns involving 50-59% of body surfaceNon-billable
- T31.50 Burns involving 50-59% of body surface with 0% to 9% third degree burns
- T31.51 Burns involving 50-59% of body surface with 10-19% third degree burns
- T31.52 Burns involving 50-59% of body surface with 20-29% third degree burns
- T31.53 Burns involving 50-59% of body surface with 30-39% third degree burns
- T31.54 Burns involving 50-59% of body surface with 40-49% third degree burns
- T31.55 Burns involving 50-59% of body surface with 50-59% third degree burns
- T31.6 Burns involving 60-69% of body surfaceNon-billable
- T31.60 Burns involving 60-69% of body surface with 0% to 9% third degree burns
- T31.61 Burns involving 60-69% of body surface with 10-19% third degree burns
- T31.62 Burns involving 60-69% of body surface with 20-29% third degree burns
- T31.63 Burns involving 60-69% of body surface with 30-39% third degree burns
- T31.64 Burns involving 60-69% of body surface with 40-49% third degree burns
- T31.65 Burns involving 60-69% of body surface with 50-59% third degree burns
- T31.66 Burns involving 60-69% of body surface with 60-69% third degree burns
- T31.7 Burns involving 70-79% of body surfaceNon-billable
- T31.70 Burns involving 70-79% of body surface with 0% to 9% third degree burns
- T31.71 Burns involving 70-79% of body surface with 10-19% third degree burns
- T31.72 Burns involving 70-79% of body surface with 20-29% third degree burns
- T31.73 Burns involving 70-79% of body surface with 30-39% third degree burns
- T31.74 Burns involving 70-79% of body surface with 40-49% third degree burns
- T31.75 Burns involving 70-79% of body surface with 50-59% third degree burns
- T31.76 Burns involving 70-79% of body surface with 60-69% third degree burns
- T31.77 Burns involving 70-79% of body surface with 70-79% third degree burns
- T31.8 Burns involving 80-89% of body surfaceNon-billable
- T31.80 Burns involving 80-89% of body surface with 0% to 9% third degree burns
- T31.81 Burns involving 80-89% of body surface with 10-19% third degree burns
- T31.82 Burns involving 80-89% of body surface with 20-29% third degree burns
- T31.83 Burns involving 80-89% of body surface with 30-39% third degree burns
- T31.84 Burns involving 80-89% of body surface with 40-49% third degree burns
- T31.85 Burns involving 80-89% of body surface with 50-59% third degree burns
- T31.86 Burns involving 80-89% of body surface with 60-69% third degree burns
- T31.87 Burns involving 80-89% of body surface with 70-79% third degree burns
- T31.88 Burns involving 80-89% of body surface with 80-89% third degree burns
- T31.9 Burns involving 90% or more of body surfaceNon-billable
- T31.90 Burns involving 90% or more of body surface with 0% to 9% third degree burns
- T31.91 Burns involving 90% or more of body surface with 10-19% third degree burns
- T31.92 Burns involving 90% or more of body surface with 20-29% third degree burns
- T31.93 Burns involving 90% or more of body surface with 30-39% third degree burns
- T31.94 Burns involving 90% or more of body surface with 40-49% third degree burns
- T31.95 Burns involving 90% or more of body surface with 50-59% third degree burns
- T31.96 Burns involving 90% or more of body surface with 60-69% third degree burns
- T31.97 Burns involving 90% or more of body surface with 70-79% third degree burns
- T31.98 Burns involving 90% or more of body surface with 80-89% third degree burns
- T31.99 Burns involving 90% or more of body surface with 90% or more third degree burns
About the T31 Code Range
The ICD-10 code section T31 is used to classify burns based on the percentage of the body surface area affected. These codes provide a detailed way to specify the extent of burns, ranging from less than 10% to over 90% of the body surface, including variations by the depth of burns such as third-degree burns.
This section helps medical coding professionals assign the correct code by exactly quantifying how much of the body's surface is burned. For example, codes like T31.0 cover burns involving less than 10% of the body surface, while codes from T31.10 through T31.99 specify burns covering 10% or more, subdivided further by the proportion of third-degree (full thickness) burns. Synonyms such as "burn involving 9 percent of body surface" or "burn any degree involving 20-29 percent of body surface" assist in recognizing the appropriate ICD-10 code for documentation and billing. This detailed classification supports clear communication of burn severity in healthcare records and insurance claims, ensuring precise treatment planning and follow-up.
Questions About This Page
How many billable codes are in the T31 range?
Of the 65 codes in this range, 55 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the T31 range classify?
The range classifies burns classified according to extent of body surface involved. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
