DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

T24 Burn and corrosion of lower limb, except ankle and foot

  • Header · not billable
  • Codes take a 7th character

T24 is not billable. The category heads 360 billable codes in FY2027, grouped under 8 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Index → code

  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)calf → T24.439
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)knee → T24.429
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)thigh → T24.419

Where it sits

  1. Chapter 19 Injury, poisoning and certain other consequences of external causes (S00-T88)
  2. T20-T25 Burns and corrosions of external body surface, specified by site (T20-T25)
  3. T24 Burn and corrosion of lower limb, except ankle and foot
Billable codes
360
Subdivisions
8
CC / MCC codes
30 / 0
HCC V28 codes
0
New FY2027
0
Index entries
120

Codes in T24

  1. T24.0
    Burn of unspecified degree of lower limb, except ankle and foot
    Header
    Use additional code 1

    Use additional code

    • external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) X00 X19 X75 X77 X96 X98 Y92
  2. T24.00
    Burn of unspecified degree of unspecified site of lower limb, except ankle and foot
    Header
  3. T24.001
    Burn of unspecified degree of unspecified site of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  4. T24.002
    Burn of unspecified degree of unspecified site of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  5. T24.009
    Burn of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  6. T24.01
    Burn of unspecified degree of thigh
    Header
  7. T24.011
    Burn of unspecified degree of right thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  8. T24.012
    Burn of unspecified degree of left thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  9. T24.019
    Burn of unspecified degree of unspecified thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  10. T24.02
    Burn of unspecified degree of knee
    Header
  11. T24.021
    Burn of unspecified degree of right knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  12. T24.022
    Burn of unspecified degree of left knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  13. T24.029
    Burn of unspecified degree of unspecified knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  14. T24.03
    Burn of unspecified degree of lower leg
    Header
  15. T24.031
    Burn of unspecified degree of right lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  16. T24.032
    Burn of unspecified degree of left lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  17. T24.039
    Burn of unspecified degree of unspecified lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  18. T24.09
    Burn of unspecified degree of multiple sites of lower limb, except ankle and foot
    Header
  19. T24.091
    Burn of unspecified degree of multiple sites of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  20. T24.092
    Burn of unspecified degree of multiple sites of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  21. T24.099
    Burn of unspecified degree of multiple sites of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  22. T24.1
    Burn of first degree of lower limb, except ankle and foot
    Header
    Use additional code 1

    Use additional code

    • external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) X00 X19 X75 X77 X96 X98 Y92
  23. T24.10
    Burn of first degree of unspecified site of lower limb, except ankle and foot
    Header
  24. T24.101
    Burn of first degree of unspecified site of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  25. T24.102
    Burn of first degree of unspecified site of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  26. T24.109
    Burn of first degree of unspecified site of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  27. T24.11
    Burn of first degree of thigh
    Header
  28. T24.111
    Burn of first degree of right thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  29. T24.112
    Burn of first degree of left thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  30. T24.119
    Burn of first degree of unspecified thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  31. T24.12
    Burn of first degree of knee
    Header
  32. T24.121
    Burn of first degree of right knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  33. T24.122
    Burn of first degree of left knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  34. T24.129
    Burn of first degree of unspecified knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  35. T24.13
    Burn of first degree of lower leg
    Header
  36. T24.131
    Burn of first degree of right lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  37. T24.132
    Burn of first degree of left lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  38. T24.139
    Burn of first degree of unspecified lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  39. T24.19
    Burn of first degree of multiple sites of lower limb, except ankle and foot
    Header
  40. T24.191
    Burn of first degree of multiple sites of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  41. T24.192
    Burn of first degree of multiple sites of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  42. T24.199
    Burn of first degree of multiple sites of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  43. T24.2
    Burn of second degree of lower limb, except ankle and foot
    Header
    Use additional code 1

    Use additional code

    • external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) X00 X19 X75 X77 X96 X98 Y92
  44. T24.20
    Burn of second degree of unspecified site of lower limb, except ankle and foot
    Header
  45. T24.201
    Burn of second degree of unspecified site of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  46. T24.202
    Burn of second degree of unspecified site of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  47. T24.209
    Burn of second degree of unspecified site of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  48. T24.21
    Burn of second degree of thigh
    Header
  49. T24.211
    Burn of second degree of right thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  50. T24.212
    Burn of second degree of left thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  51. T24.219
    Burn of second degree of unspecified thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  52. T24.22
    Burn of second degree of knee
    Header
  53. T24.221
    Burn of second degree of right knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  54. T24.222
    Burn of second degree of left knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  55. T24.229
    Burn of second degree of unspecified knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  56. T24.23
    Burn of second degree of lower leg
    Header
  57. T24.231
    Burn of second degree of right lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  58. T24.232
    Burn of second degree of left lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  59. T24.239
    Burn of second degree of unspecified lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  60. T24.29
    Burn of second degree of multiple sites of lower limb, except ankle and foot
    Header
  61. T24.291
    Burn of second degree of multiple sites of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  62. T24.292
    Burn of second degree of multiple sites of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  63. T24.299
    Burn of second degree of multiple sites of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  64. T24.3
    Burn of third degree of lower limb, except ankle and foot
    Header
    Use additional code 1

    Use additional code

    • external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92) X00 X19 X75 X77 X96 X98 Y92
  65. T24.30
    Burn of third degree of unspecified site of lower limb, except ankle and foot
    Header
  66. T24.301
    Burn of third degree of unspecified site of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  67. T24.302
    Burn of third degree of unspecified site of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  68. T24.309
    Burn of third degree of unspecified site of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  69. T24.31
    Burn of third degree of thigh
    Header
  70. T24.311
    Burn of third degree of right thigh +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  71. T24.312
    Burn of third degree of left thigh +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  72. T24.319
    Burn of third degree of unspecified thigh +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  73. T24.32
    Burn of third degree of knee
    Header
  74. T24.321
    Burn of third degree of right knee +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  75. T24.322
    Burn of third degree of left knee +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  76. T24.329
    Burn of third degree of unspecified knee +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  77. T24.33
    Burn of third degree of lower leg
    Header
  78. T24.331
    Burn of third degree of right lower leg +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  79. T24.332
    Burn of third degree of left lower leg +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  80. T24.339
    Burn of third degree of unspecified lower leg +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  81. T24.39
    Burn of third degree of multiple sites of lower limb, except ankle and foot
    Header
  82. T24.391
    Burn of third degree of multiple sites of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  83. T24.392
    Burn of third degree of multiple sites of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  84. T24.399
    Burn of third degree of multiple sites of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  85. T24.4
    Corrosion of unspecified degree of lower limb, except ankle and foot
    Header
    Code first 1, Use additional code 1

    Code first

    • (T51-T65) to identify chemical and intent T51 T65

    Use additional code

    • external cause code to identify place (Y92) Y92
  86. T24.40
    Corrosion of unspecified degree of unspecified site of lower limb, except ankle and foot
    Header
  87. T24.401
    Corrosion of unspecified degree of unspecified site of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  88. T24.402
    Corrosion of unspecified degree of unspecified site of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  89. T24.409
    Corrosion of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  90. T24.41
    Corrosion of unspecified degree of thigh
    Header
  91. T24.411
    Corrosion of unspecified degree of right thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  92. T24.412
    Corrosion of unspecified degree of left thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  93. T24.419
    Corrosion of unspecified degree of unspecified thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  94. T24.42
    Corrosion of unspecified degree of knee
    Header
  95. T24.421
    Corrosion of unspecified degree of right knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  96. T24.422
    Corrosion of unspecified degree of left knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  97. T24.429
    Corrosion of unspecified degree of unspecified knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  98. T24.43
    Corrosion of unspecified degree of lower leg
    Header
  99. T24.431
    Corrosion of unspecified degree of right lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  100. T24.432
    Corrosion of unspecified degree of left lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  101. T24.439
    Corrosion of unspecified degree of unspecified lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  102. T24.49
    Corrosion of unspecified degree of multiple sites of lower limb, except ankle and foot
    Header
  103. T24.491
    Corrosion of unspecified degree of multiple sites of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  104. T24.492
    Corrosion of unspecified degree of multiple sites of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  105. T24.499
    Corrosion of unspecified degree of multiple sites of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  106. T24.5
    Corrosion of first degree of lower limb, except ankle and foot
    Header
    Code first 1, Use additional code 1

    Code first

    • (T51-T65) to identify chemical and intent T51 T65

    Use additional code

    • external cause code to identify place (Y92) Y92
  107. T24.50
    Corrosion of first degree of unspecified site of lower limb, except ankle and foot
    Header
  108. T24.501
    Corrosion of first degree of unspecified site of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  109. T24.502
    Corrosion of first degree of unspecified site of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  110. T24.509
    Corrosion of first degree of unspecified site of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  111. T24.51
    Corrosion of first degree of thigh
    Header
  112. T24.511
    Corrosion of first degree of right thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  113. T24.512
    Corrosion of first degree of left thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  114. T24.519
    Corrosion of first degree of unspecified thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  115. T24.52
    Corrosion of first degree of knee
    Header
  116. T24.521
    Corrosion of first degree of right knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  117. T24.522
    Corrosion of first degree of left knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  118. T24.529
    Corrosion of first degree of unspecified knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  119. T24.53
    Corrosion of first degree of lower leg
    Header
  120. T24.531
    Corrosion of first degree of right lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  121. T24.532
    Corrosion of first degree of left lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  122. T24.539
    Corrosion of first degree of unspecified lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  123. T24.59
    Corrosion of first degree of multiple sites of lower limb, except ankle and foot
    Header
  124. T24.591
    Corrosion of first degree of multiple sites of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  125. T24.592
    Corrosion of first degree of multiple sites of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  126. T24.599
    Corrosion of first degree of multiple sites of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  127. T24.6
    Corrosion of second degree of lower limb, except ankle and foot
    Header
    Code first 1, Use additional code 1

    Code first

    • (T51-T65) to identify chemical and intent T51 T65

    Use additional code

    • external cause code to identify place (Y92) Y92
  128. T24.60
    Corrosion of second degree of unspecified site of lower limb, except ankle and foot
    Header
  129. T24.601
    Corrosion of second degree of unspecified site of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  130. T24.602
    Corrosion of second degree of unspecified site of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  131. T24.609
    Corrosion of second degree of unspecified site of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  132. T24.61
    Corrosion of second degree of thigh
    Header
  133. T24.611
    Corrosion of second degree of right thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  134. T24.612
    Corrosion of second degree of left thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  135. T24.619
    Corrosion of second degree of unspecified thigh +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  136. T24.62
    Corrosion of second degree of knee
    Header
  137. T24.621
    Corrosion of second degree of right knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  138. T24.622
    Corrosion of second degree of left knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  139. T24.629
    Corrosion of second degree of unspecified knee +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  140. T24.63
    Corrosion of second degree of lower leg
    Header
  141. T24.631
    Corrosion of second degree of right lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  142. T24.632
    Corrosion of second degree of left lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  143. T24.639
    Corrosion of second degree of unspecified lower leg +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  144. T24.69
    Corrosion of second degree of multiple sites of lower limb, except ankle and foot
    Header
  145. T24.691
    Corrosion of second degree of multiple sites of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  146. T24.692
    Corrosion of second degree of multiple sites of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  147. T24.699
    Corrosion of second degree of multiple sites of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  148. T24.7
    Corrosion of third degree of lower limb, except ankle and foot
    Header
    Code first 1, Use additional code 1

    Code first

    • (T51-T65) to identify chemical and intent T51 T65

    Use additional code

    • external cause code to identify place (Y92) Y92
  149. T24.70
    Corrosion of third degree of unspecified site of lower limb, except ankle and foot
    Header
  150. T24.701
    Corrosion of third degree of unspecified site of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  151. T24.702
    Corrosion of third degree of unspecified site of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  152. T24.709
    Corrosion of third degree of unspecified site of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  153. T24.71
    Corrosion of third degree of thigh
    Header
  154. T24.711
    Corrosion of third degree of right thigh +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  155. T24.712
    Corrosion of third degree of left thigh +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  156. T24.719
    Corrosion of third degree of unspecified thigh +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  157. T24.72
    Corrosion of third degree of knee
    Header
  158. T24.721
    Corrosion of third degree of right knee +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  159. T24.722
    Corrosion of third degree of left knee +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  160. T24.729
    Corrosion of third degree of unspecified knee +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  161. T24.73
    Corrosion of third degree of lower leg
    Header
  162. T24.731
    Corrosion of third degree of right lower leg +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  163. T24.732
    Corrosion of third degree of left lower leg +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  164. T24.739
    Corrosion of third degree of unspecified lower leg +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  165. T24.79
    Corrosion of third degree of multiple sites of lower limb, except ankle and foot
    Header
  166. T24.791
    Corrosion of third degree of multiple sites of right lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  167. T24.792
    Corrosion of third degree of multiple sites of left lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  168. T24.799
    Corrosion of third degree of multiple sites of unspecified lower limb, except ankle and foot +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column. Rows marked +7th need a 7th character: pick one to build the full code; its code card has its own flags.

Instructions

At T24

Excludes2

  • burn and corrosion of ankle and foot (T25.-) T25
  • burn and corrosion of hip region (T21.-) T21

Notes that also apply

Block T20-T25 instructions (Includes 3, Use additional code 1): printed on the block page.

Instructions for the group T20-T32 (Includes 10, Excludes2 3): printed on the chapter 19 page.

Chapter 19 instructions (Notes 2, Excludes2 2, Use additional code 1): printed on the chapter 19 page.

7th characters

7th characters for T24 defined here

The appropriate 7th character is to be added to each code from category T24

7th characters for T24
7thMeaning (NCHS)
Ainitial encounter
Dsubsequent encounter
Ssequela

A code that takes a 7th character is invalid without it; the placeholder X fills a code shorter than 6 characters (Official Guidelines I.A.5). How 7th characters work.

Index entries

  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)thigh → T24.019
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)knee → T24.029
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)calf → T24.039
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)thigh → T24.419
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)knee → T24.429
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)calf → T24.439
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)lowerlimb → T24.009
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)thighright → T24.011
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)thighleft → T24.012
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)kneeright → T24.021
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)kneeleft → T24.022
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)calfright → T24.031
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)calfleft → T24.032
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)thighfirst degree → T24.119
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)kneefirst degree → T24.129
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)calffirst degree → T24.139
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)thighsecond degree → T24.219
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)kneesecond degree → T24.229
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)calfsecond degree → T24.239
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)thighthird degree → T24.319
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)kneethird degree → T24.329
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)calfthird degree → T24.339
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)lowerlimb → T24.409
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)thighright → T24.411
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)thighleft → T24.412
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)kneeright → T24.421
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)kneeleft → T24.422
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)calfright → T24.431
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)calfleft → T24.432
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)thighfirst degree → T24.519
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)kneefirst degree → T24.529
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)calffirst degree → T24.539
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)thighsecond degree → T24.619
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)kneesecond degree → T24.629
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)calfsecond degree → T24.639
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)thighthird degree → T24.719
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)kneethird degree → T24.729
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)calfthird degree → T24.739
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)lowerlimbright → T24.001
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)lowerlimbleft → T24.002

80 more, longer entries are not listed; the search box finds them by word.

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy