DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

W16 Fall, jump or diving into water

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

W16 is not billable. The category heads 138 billable codes in FY2027, grouped under 10 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Where it sits

  1. Chapter 20 External causes of morbidity (V00-Y99)
  2. W00-W19 Slipping, tripping, stumbling and falls (W00-W19)
  3. W16 Fall, jump or diving into water
Billable codes
138
Subdivisions
10
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
0

Codes in W16

  1. W16.0
    Fall into swimming pool
    Header
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Fall into swimming pool NOS

    Excludes1

    • fall into empty swimming pool (W17.3) W17.3
  2. W16.01
    Fall into swimming pool striking water surface
    Header
  3. W16.011
    Fall into swimming pool striking water surface causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in swimming pool without fall (W67) W67
  4. W16.012
    Fall into swimming pool striking water surface causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  5. W16.02
    Fall into swimming pool striking bottom
    Header
  6. W16.021
    Fall into swimming pool striking bottom causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in swimming pool without fall (W67) W67
  7. W16.022
    Fall into swimming pool striking bottom causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  8. W16.03
    Fall into swimming pool striking wall
    Header
  9. W16.031
    Fall into swimming pool striking wall causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in swimming pool without fall (W67) W67
  10. W16.032
    Fall into swimming pool striking wall causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  11. W16.1
    Fall into natural body of water
    Header
    Inclusion terms 4

    Inclusion terms

    • Fall into lake
    • Fall into open sea
    • Fall into river
    • Fall into stream
  12. W16.11
    Fall into natural body of water striking water surface
    Header
  13. W16.111
    Fall into natural body of water striking water surface causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in natural body of water without fall (W69) W69
  14. W16.112
    Fall into natural body of water striking water surface causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  15. W16.12
    Fall into natural body of water striking bottom
    Header
  16. W16.121
    Fall into natural body of water striking bottom causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in natural body of water without fall (W69) W69
  17. W16.122
    Fall into natural body of water striking bottom causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  18. W16.13
    Fall into natural body of water striking side
    Header
  19. W16.131
    Fall into natural body of water striking side causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in natural body of water without fall (W69) W69
  20. W16.132
    Fall into natural body of water striking side causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  21. W16.2
    Fall in (into) filled bathtub or bucket of water
    Header
  22. W16.21
    Fall in (into) filled bathtub
    Header
    Excludes1 1

    Excludes1

    • fall into empty bathtub (W18.2) W18.2
  23. W16.211
    Fall in (into) filled bathtub causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in filled bathtub without fall (W65) W65
  24. W16.212
    Fall in (into) filled bathtub causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  25. W16.22
    Fall in (into) bucket of water
    Header
  26. W16.221
    Fall in (into) bucket of water causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  27. W16.222
    Fall in (into) bucket of water causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  28. W16.3
    Fall into other water
    Header
    Inclusion terms 2

    Inclusion terms

    • Fall into fountain
    • Fall into reservoir
  29. W16.31
    Fall into other water striking water surface
    Header
  30. W16.311
    Fall into other water striking water surface causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in other water without fall (W73) W73
  31. W16.312
    Fall into other water striking water surface causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  32. W16.32
    Fall into other water striking bottom
    Header
  33. W16.321
    Fall into other water striking bottom causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in other water without fall (W73) W73
  34. W16.322
    Fall into other water striking bottom causing other injury +7th: A D S
    Needs 7th characterExempt: 1 of 3 7th characters
  35. W16.33
    Fall into other water striking wall
    Header
  36. W16.331
    Fall into other water striking wall causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in other water without fall (W73) W73
  37. W16.332
    Fall into other water striking wall causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  38. W16.4
    Fall into unspecified water
    Header
  39. W16.41
    Fall into unspecified water causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  40. W16.42
    Fall into unspecified water causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  41. W16.5
    Jumping or diving into swimming pool
    Header
  42. W16.51
    Jumping or diving into swimming pool striking water surface
    Header
  43. W16.511
    Jumping or diving into swimming pool striking water surface causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in swimming pool without jumping or diving (W67) W67
  44. W16.512
    Jumping or diving into swimming pool striking water surface causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  45. W16.52
    Jumping or diving into swimming pool striking bottom
    Header
  46. W16.521
    Jumping or diving into swimming pool striking bottom causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in swimming pool without jumping or diving (W67) W67
  47. W16.522
    Jumping or diving into swimming pool striking bottom causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  48. W16.53
    Jumping or diving into swimming pool striking wall
    Header
  49. W16.531
    Jumping or diving into swimming pool striking wall causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in swimming pool without jumping or diving (W67) W67
  50. W16.532
    Jumping or diving into swimming pool striking wall causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  51. W16.6
    Jumping or diving into natural body of water
    Header
    Inclusion terms 4

    Inclusion terms

    • Jumping or diving into lake
    • Jumping or diving into open sea
    • Jumping or diving into river
    • Jumping or diving into stream
  52. W16.61
    Jumping or diving into natural body of water striking water surface
    Header
  53. W16.611
    Jumping or diving into natural body of water striking water surface causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in natural body of water without jumping or diving (W69) W69
  54. W16.612
    Jumping or diving into natural body of water striking water surface causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  55. W16.62
    Jumping or diving into natural body of water striking bottom
    Header
  56. W16.621
    Jumping or diving into natural body of water striking bottom causing drowning and submersion +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Excludes1 1

    Excludes1

    • drowning and submersion while in natural body of water without jumping or diving (W69) W69
  57. W16.622
    Jumping or diving into natural body of water striking bottom causing other injury +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  58. W16.7
    Jumping or diving from boat
    Header
    Excludes1 1

    Excludes1

    • Fall from boat into water -see watercraft accident (V90-V94) V90 V94
  59. W16.71
    Jumping or diving from boat striking water surface
    Header
  60. W16.711
    Jumping or diving from boat striking water surface causing drowning and submersion +7th: A D S
    Needs 7th characterExempt
  61. W16.712
    Jumping or diving from boat striking water surface causing other injury +7th: A D S
    Needs 7th characterExempt
  62. W16.72
    Jumping or diving from boat striking bottom
    Header
  63. W16.721
    Jumping or diving from boat striking bottom causing drowning and submersion +7th: A D S
    Needs 7th characterExempt
  64. W16.722
    Jumping or diving from boat striking bottom causing other injury +7th: A D S
    Needs 7th characterExempt
  65. W16.8
    Jumping or diving into other water
    Header
    Inclusion terms 2

    Inclusion terms

    • Jumping or diving into fountain
    • Jumping or diving into reservoir
  66. W16.81
    Jumping or diving into other water striking water surface
    Header
  67. W16.811
    Jumping or diving into other water striking water surface causing drowning and submersion +7th: A D S
    Needs 7th characterExempt
    Excludes1 1

    Excludes1

    • drowning and submersion while in other water without jumping or diving (W73) W73
  68. W16.812
    Jumping or diving into other water striking water surface causing other injury +7th: A D S
    Needs 7th characterExempt
  69. W16.82
    Jumping or diving into other water striking bottom
    Header
  70. W16.821
    Jumping or diving into other water striking bottom causing drowning and submersion +7th: A D S
    Needs 7th characterExempt
    Excludes1 1

    Excludes1

    • drowning and submersion while in other water without jumping or diving (W73) W73
  71. W16.822
    Jumping or diving into other water striking bottom causing other injury +7th: A D S
    Needs 7th characterExempt
  72. W16.83
    Jumping or diving into other water striking wall
    Header
  73. W16.831
    Jumping or diving into other water striking wall causing drowning and submersion +7th: A D S
    Needs 7th characterExempt
    Excludes1 1

    Excludes1

    • drowning and submersion while in other water without jumping or diving (W73) W73
  74. W16.832
    Jumping or diving into other water striking wall causing other injury +7th: A D S
    Needs 7th characterExempt
  75. W16.9
    Jumping or diving into unspecified water
    Header
  76. W16.91
    Jumping or diving into unspecified water causing drowning and submersion +7th: A D S
    Needs 7th characterExempt
  77. W16.92
    Jumping or diving into unspecified water causing other injury +7th: A D S
    Needs 7th characterExempt

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 W16

Excludes1

  • accidental non-watercraft drowning and submersion not involving fall (W65-W74) W65 W74
  • effects of air pressure from diving (W94.-) W94
  • fall into water from watercraft (V90-V94) V90 V94
  • hitting an object or against bottom when falling from watercraft (V94.0) V94.0

Excludes2

  • striking or hitting diving board (W21.4) W21.4

Notes that also apply

Block W00-W19 instructions (Excludes1 5, Excludes2 3): printed on the block page.

Chapter 20 instructions (Notes 1): printed on the chapter 20 page.

7th characters

7th characters for W16 defined here

The appropriate 7th character is to be added to each code from category W16

7th characters for W16
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.

Hierarchy