DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

T21 Burn and corrosion of trunk

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

T21 is not billable. The category heads 216 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)trunk → T21.40
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)buttock(s) → T21.45
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)chest wall → T21.41

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. T21 Burn and corrosion of trunk
Billable codes
216
Subdivisions
8
CC / MCC codes
18 / 0
HCC V28 codes
0
New FY2027
0
Index entries
72

Codes in T21

  1. T21.0
    Burn of unspecified degree of trunk
    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. T21.00
    Burn of unspecified degree of trunk, unspecified site +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  3. T21.01
    Burn of unspecified degree of chest wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of unspecified degree of breast
  4. T21.02
    Burn of unspecified degree of abdominal wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 2

    Inclusion terms

    • Burn of unspecified degree of flank
    • Burn of unspecified degree of groin
  5. T21.03
    Burn of unspecified degree of upper back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of unspecified degree of interscapular region
  6. T21.04
    Burn of unspecified degree of lower back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  7. T21.05
    Burn of unspecified degree of buttock +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of unspecified degree of anus
  8. T21.06
    Burn of unspecified degree of male genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3

    Inclusion terms

    • Burn of unspecified degree of penis
    • Burn of unspecified degree of scrotum
    • Burn of unspecified degree of testis
  9. T21.07
    Burn of unspecified degree of female genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3, Excludes2 1

    Inclusion terms

    • Burn of unspecified degree of labium (majus) (minus)
    • Burn of unspecified degree of perineum
    • Burn of unspecified degree of vulva

    Excludes2

    • burn of vagina (T28.3) T28.3
  10. T21.09
    Burn of unspecified degree of other site of trunk +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  11. T21.1
    Burn of first degree of trunk
    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
  12. T21.10
    Burn of first degree of trunk, unspecified site +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  13. T21.11
    Burn of first degree of chest wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of first degree of breast
  14. T21.12
    Burn of first degree of abdominal wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 2

    Inclusion terms

    • Burn of first degree of flank
    • Burn of first degree of groin
  15. T21.13
    Burn of first degree of upper back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of first degree of interscapular region
  16. T21.14
    Burn of first degree of lower back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  17. T21.15
    Burn of first degree of buttock +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of first degree of anus
  18. T21.16
    Burn of first degree of male genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3

    Inclusion terms

    • Burn of first degree of penis
    • Burn of first degree of scrotum
    • Burn of first degree of testis
  19. T21.17
    Burn of first degree of female genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3, Excludes2 1

    Inclusion terms

    • Burn of first degree of labium (majus) (minus)
    • Burn of first degree of perineum
    • Burn of first degree of vulva

    Excludes2

    • burn of vagina (T28.3) T28.3
  20. T21.19
    Burn of first degree of other site of trunk +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  21. T21.2
    Burn of second degree of trunk
    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
  22. T21.20
    Burn of second degree of trunk, unspecified site +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  23. T21.21
    Burn of second degree of chest wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of second degree of breast
  24. T21.22
    Burn of second degree of abdominal wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 2

    Inclusion terms

    • Burn of second degree of flank
    • Burn of second degree of groin
  25. T21.23
    Burn of second degree of upper back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of second degree of interscapular region
  26. T21.24
    Burn of second degree of lower back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  27. T21.25
    Burn of second degree of buttock +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of second degree of anus
  28. T21.26
    Burn of second degree of male genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3

    Inclusion terms

    • Burn of second degree of penis
    • Burn of second degree of scrotum
    • Burn of second degree of testis
  29. T21.27
    Burn of second degree of female genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3, Excludes2 1

    Inclusion terms

    • Burn of second degree of labium (majus) (minus)
    • Burn of second degree of perineum
    • Burn of second degree of vulva

    Excludes2

    • burn of vagina (T28.3) T28.3
  30. T21.29
    Burn of second degree of other site of trunk +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  31. T21.3
    Burn of third degree of trunk
    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
  32. T21.30
    Burn of third degree of trunk, unspecified site +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  33. T21.31
    Burn of third degree of chest wall +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of third degree of breast
  34. T21.32
    Burn of third degree of abdominal wall +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 2

    Inclusion terms

    • Burn of third degree of flank
    • Burn of third degree of groin
  35. T21.33
    Burn of third degree of upper back +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of third degree of interscapular region
  36. T21.34
    Burn of third degree of lower back +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  37. T21.35
    Burn of third degree of buttock +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Burn of third degree of anus
  38. T21.36
    Burn of third degree of male genital region +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 3

    Inclusion terms

    • Burn of third degree of penis
    • Burn of third degree of scrotum
    • Burn of third degree of testis
  39. T21.37
    Burn of third degree of female genital region +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 3, Excludes2 1

    Inclusion terms

    • Burn of third degree of labium (majus) (minus)
    • Burn of third degree of perineum
    • Burn of third degree of vulva

    Excludes2

    • burn of vagina (T28.3) T28.3
  40. T21.39
    Burn of third degree of other site of trunk +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  41. T21.4
    Corrosion of unspecified degree of trunk
    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
  42. T21.40
    Corrosion of unspecified degree of trunk, unspecified site +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  43. T21.41
    Corrosion of unspecified degree of chest wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of unspecified degree of breast
  44. T21.42
    Corrosion of unspecified degree of abdominal wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 2

    Inclusion terms

    • Corrosion of unspecified degree of flank
    • Corrosion of unspecified degree of groin
  45. T21.43
    Corrosion of unspecified degree of upper back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of unspecified degree of interscapular region
  46. T21.44
    Corrosion of unspecified degree of lower back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  47. T21.45
    Corrosion of unspecified degree of buttock +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of unspecified degree of anus
  48. T21.46
    Corrosion of unspecified degree of male genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3

    Inclusion terms

    • Corrosion of unspecified degree of penis
    • Corrosion of unspecified degree of scrotum
    • Corrosion of unspecified degree of testis
  49. T21.47
    Corrosion of unspecified degree of female genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3, Excludes2 1

    Inclusion terms

    • Corrosion of unspecified degree of labium (majus) (minus)
    • Corrosion of unspecified degree of perineum
    • Corrosion of unspecified degree of vulva

    Excludes2

    • corrosion of vagina (T28.8) T28.8
  50. T21.49
    Corrosion of unspecified degree of other site of trunk +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  51. T21.5
    Corrosion of first degree of trunk
    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
  52. T21.50
    Corrosion of first degree of trunk, unspecified site +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  53. T21.51
    Corrosion of first degree of chest wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of first degree of breast
  54. T21.52
    Corrosion of first degree of abdominal wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 2

    Inclusion terms

    • Corrosion of first degree of flank
    • Corrosion of first degree of groin
  55. T21.53
    Corrosion of first degree of upper back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of first degree of interscapular region
  56. T21.54
    Corrosion of first degree of lower back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  57. T21.55
    Corrosion of first degree of buttock +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of first degree of anus
  58. T21.56
    Corrosion of first degree of male genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3

    Inclusion terms

    • Corrosion of first degree of penis
    • Corrosion of first degree of scrotum
    • Corrosion of first degree of testis
  59. T21.57
    Corrosion of first degree of female genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3, Excludes2 1

    Inclusion terms

    • Corrosion of first degree of labium (majus) (minus)
    • Corrosion of first degree of perineum
    • Corrosion of first degree of vulva

    Excludes2

    • corrosion of vagina (T28.8) T28.8
  60. T21.59
    Corrosion of first degree of other site of trunk +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  61. T21.6
    Corrosion of second degree of trunk
    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
  62. T21.60
    Corrosion of second degree of trunk, unspecified site +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  63. T21.61
    Corrosion of second degree of chest wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of second degree of breast
  64. T21.62
    Corrosion of second degree of abdominal wall +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 2

    Inclusion terms

    • Corrosion of second degree of flank
    • Corrosion of second degree of groin
  65. T21.63
    Corrosion of second degree of upper back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of second degree of interscapular region
  66. T21.64
    Corrosion of second degree of lower back +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  67. T21.65
    Corrosion of second degree of buttock +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of second degree of anus
  68. T21.66
    Corrosion of second degree of male genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3

    Inclusion terms

    • Corrosion of second degree of penis
    • Corrosion of second degree of scrotum
    • Corrosion of second degree of testis
  69. T21.67
    Corrosion of second degree of female genital region +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 3, Excludes2 1

    Inclusion terms

    • Corrosion of second degree of labium (majus) (minus)
    • Corrosion of second degree of perineum
    • Corrosion of second degree of vulva

    Excludes2

    • corrosion of vagina (T28.8) T28.8
  70. T21.69
    Corrosion of second degree of other site of trunk +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  71. T21.7
    Corrosion of third degree of trunk
    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
  72. T21.70
    Corrosion of third degree of trunk, unspecified site +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  73. T21.71
    Corrosion of third degree of chest wall +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of third degree of breast
  74. T21.72
    Corrosion of third degree of abdominal wall +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 2

    Inclusion terms

    • Corrosion of third degree of flank
    • Corrosion of third degree of groin
  75. T21.73
    Corrosion of third degree of upper back +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of third degree of interscapular region
  76. T21.74
    Corrosion of third degree of lower back +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  77. T21.75
    Corrosion of third degree of buttock +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Corrosion of third degree of anus
  78. T21.76
    Corrosion of third degree of male genital region +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 3

    Inclusion terms

    • Corrosion of third degree of penis
    • Corrosion of third degree of scrotum
    • Corrosion of third degree of testis
  79. T21.77
    Corrosion of third degree of female genital region +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
    Inclusion terms 3, Excludes2 1

    Inclusion terms

    • Corrosion of third degree of labium (majus) (minus)
    • Corrosion of third degree of perineum
    • Corrosion of third degree of vulva

    Excludes2

    • corrosion of vagina (T28.8) T28.8
  80. T21.79
    Corrosion of third degree of other site of trunk +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 T21

Includes

  • burns and corrosion of hip region

Excludes2

  • burns and corrosion of axilla (T22.- with fifth character 4) T22
  • burns and corrosion of scapular region (T22.- with fifth character 6) T22
  • burns and corrosion of shoulder (T22.- with fifth character 5) T22

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 T21 defined here

The appropriate 7th character is to be added to each code from category T21

7th characters for T21
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)trunk → T21.00
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)chest wall → T21.01
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)abdomen, abdominal (muscle) (wall) → T21.02
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)back (lower) → T21.04
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)buttock(s) → T21.05
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)trunk → T21.40
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)chest wall → T21.41
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)abdomen, abdominal (muscle) (wall) → T21.42
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)back (lower) → T21.44
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)buttock(s) → T21.45
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)back (lower)upper → T21.03
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)trunkspecified site NEC → T21.09
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)trunkfirst degree → T21.10
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)chest wallfirst degree → T21.11
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)abdomen, abdominal (muscle) (wall)first degree → T21.12
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)back (lower)first degree → T21.14
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)buttock(s)first degree → T21.15
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)trunksecond degree → T21.20
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)chest wallsecond degree → T21.21
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)abdomen, abdominal (muscle) (wall)second degree → T21.22
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)back (lower)second degree → T21.24
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)buttock(s)second degree → T21.25
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)trunkthird degree → T21.30
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)chest wallthird degree → T21.31
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)abdomen, abdominal (muscle) (wall)third degree → T21.32
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)back (lower)third degree → T21.34
  • Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)buttock(s)third degree → T21.35
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)back (lower)upper → T21.43
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)trunkspecified site NEC → T21.49
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)trunkfirst degree → T21.50
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)chest wallfirst degree → T21.51
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)abdomen, abdominal (muscle) (wall)first degree → T21.52
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)back (lower)first degree → T21.54
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)buttock(s)first degree → T21.55
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)trunksecond degree → T21.60
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)chest wallsecond degree → T21.61
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)abdomen, abdominal (muscle) (wall)second degree → T21.62
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)back (lower)second degree → T21.64
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)buttock(s)second degree → T21.65
  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal)trunkthird degree → T21.70

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

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

Hierarchy