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  2. ICD-10-CM Codes List
  3. S00–T88
  4. T30-T32
  5. Burns classified according to extent of body surface involved (T31)

Burns classified according to extent of body surface involved (T31)

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.

  • Injury, poisoning and certain other consequences of external causes (S00–T88)

    • Burns and corrosions of multiple and unspecified body regions (T30-T32)

        • Burns classified according to extent of body surface involved (T31)

        • T31 Burns classified according to extent of body surface involved
        • T31.0 Burns involving less than 10% of body surface
        • T31.1 Burns involving 10-19% of body surface
        • 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 surface
        • 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 surface
        • 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 surface
        • 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 surface
        • 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 surface
        • 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 surface
        • 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 surface
        • 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 surface
        • 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

Instructional Notations

  • This category is to be used as the primary code only when the site of the burn is unspecified. It should be used as a supplementary code with categories T20 T25