DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

S91 Open wound of ankle, foot and toes

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

S91 is not billable. The category heads 360 billable codes in FY2027, grouped under 4 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Index → code

Where it sits

  1. Chapter 19 Injury, poisoning and certain other consequences of external causes (S00-T88)
  2. S90-S99 Injuries to the ankle and foot (S90-S99)
  3. S91 Open wound of ankle, foot and toes
Billable codes
360
Subdivisions
4
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
100

Codes in S91

  1. S91.0
    Open wound of ankle
    Header
  2. S91.00
    Unspecified open wound of ankle
    Header
  3. S91.001
    Unspecified open wound, right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  4. S91.002
    Unspecified open wound, left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  5. S91.009
    Unspecified open wound, unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  6. S91.01
    Laceration without foreign body of ankle
    Header
  7. S91.011
    Laceration without foreign body, right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  8. S91.012
    Laceration without foreign body, left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  9. S91.019
    Laceration without foreign body, unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  10. S91.02
    Laceration with foreign body of ankle
    Header
  11. S91.021
    Laceration with foreign body, right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  12. S91.022
    Laceration with foreign body, left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  13. S91.029
    Laceration with foreign body, unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  14. S91.03
    Puncture wound without foreign body of ankle
    Header
  15. S91.031
    Puncture wound without foreign body, right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  16. S91.032
    Puncture wound without foreign body, left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  17. S91.039
    Puncture wound without foreign body, unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  18. S91.04
    Puncture wound with foreign body of ankle
    Header
  19. S91.041
    Puncture wound with foreign body, right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  20. S91.042
    Puncture wound with foreign body, left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  21. S91.049
    Puncture wound with foreign body, unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  22. S91.05
    Open bite of ankle
    Header
    Excludes1 1

    Excludes1

  23. S91.051
    Open bite, right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  24. S91.052
    Open bite, left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  25. S91.059
    Open bite, unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  26. S91.1
    Open wound of toe without damage to nail
    Header
  27. S91.10
    Unspecified open wound of toe without damage to nail
    Header
  28. S91.101
    Unspecified open wound of right great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  29. S91.102
    Unspecified open wound of left great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  30. S91.103
    Unspecified open wound of unspecified great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  31. S91.104
    Unspecified open wound of right lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  32. S91.105
    Unspecified open wound of left lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  33. S91.106
    Unspecified open wound of unspecified lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  34. S91.109
    Unspecified open wound of unspecified toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  35. S91.11
    Laceration without foreign body of toe without damage to nail
    Header
  36. S91.111
    Laceration without foreign body of right great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  37. S91.112
    Laceration without foreign body of left great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  38. S91.113
    Laceration without foreign body of unspecified great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  39. S91.114
    Laceration without foreign body of right lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  40. S91.115
    Laceration without foreign body of left lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  41. S91.116
    Laceration without foreign body of unspecified lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  42. S91.119
    Laceration without foreign body of unspecified toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  43. S91.12
    Laceration with foreign body of toe without damage to nail
    Header
  44. S91.121
    Laceration with foreign body of right great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  45. S91.122
    Laceration with foreign body of left great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  46. S91.123
    Laceration with foreign body of unspecified great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  47. S91.124
    Laceration with foreign body of right lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  48. S91.125
    Laceration with foreign body of left lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  49. S91.126
    Laceration with foreign body of unspecified lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  50. S91.129
    Laceration with foreign body of unspecified toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  51. S91.13
    Puncture wound without foreign body of toe without damage to nail
    Header
  52. S91.131
    Puncture wound without foreign body of right great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  53. S91.132
    Puncture wound without foreign body of left great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  54. S91.133
    Puncture wound without foreign body of unspecified great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  55. S91.134
    Puncture wound without foreign body of right lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  56. S91.135
    Puncture wound without foreign body of left lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  57. S91.136
    Puncture wound without foreign body of unspecified lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  58. S91.139
    Puncture wound without foreign body of unspecified toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  59. S91.14
    Puncture wound with foreign body of toe without damage to nail
    Header
  60. S91.141
    Puncture wound with foreign body of right great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  61. S91.142
    Puncture wound with foreign body of left great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  62. S91.143
    Puncture wound with foreign body of unspecified great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  63. S91.144
    Puncture wound with foreign body of right lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  64. S91.145
    Puncture wound with foreign body of left lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  65. S91.146
    Puncture wound with foreign body of unspecified lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  66. S91.149
    Puncture wound with foreign body of unspecified toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  67. S91.15
    Open bite of toe without damage to nail
    Header
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Bite of toe NOS

    Excludes1

  68. S91.151
    Open bite of right great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  69. S91.152
    Open bite of left great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  70. S91.153
    Open bite of unspecified great toe without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  71. S91.154
    Open bite of right lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  72. S91.155
    Open bite of left lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  73. S91.156
    Open bite of unspecified lesser toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  74. S91.159
    Open bite of unspecified toe(s) without damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  75. S91.2
    Open wound of toe with damage to nail
    Header
  76. S91.20
    Unspecified open wound of toe with damage to nail
    Header
  77. S91.201
    Unspecified open wound of right great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  78. S91.202
    Unspecified open wound of left great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  79. S91.203
    Unspecified open wound of unspecified great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  80. S91.204
    Unspecified open wound of right lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  81. S91.205
    Unspecified open wound of left lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  82. S91.206
    Unspecified open wound of unspecified lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  83. S91.209
    Unspecified open wound of unspecified toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  84. S91.21
    Laceration without foreign body of toe with damage to nail
    Header
  85. S91.211
    Laceration without foreign body of right great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  86. S91.212
    Laceration without foreign body of left great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  87. S91.213
    Laceration without foreign body of unspecified great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  88. S91.214
    Laceration without foreign body of right lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  89. S91.215
    Laceration without foreign body of left lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  90. S91.216
    Laceration without foreign body of unspecified lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  91. S91.219
    Laceration without foreign body of unspecified toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  92. S91.22
    Laceration with foreign body of toe with damage to nail
    Header
  93. S91.221
    Laceration with foreign body of right great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  94. S91.222
    Laceration with foreign body of left great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  95. S91.223
    Laceration with foreign body of unspecified great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  96. S91.224
    Laceration with foreign body of right lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  97. S91.225
    Laceration with foreign body of left lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  98. S91.226
    Laceration with foreign body of unspecified lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  99. S91.229
    Laceration with foreign body of unspecified toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  100. S91.23
    Puncture wound without foreign body of toe with damage to nail
    Header
  101. S91.231
    Puncture wound without foreign body of right great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  102. S91.232
    Puncture wound without foreign body of left great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  103. S91.233
    Puncture wound without foreign body of unspecified great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  104. S91.234
    Puncture wound without foreign body of right lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  105. S91.235
    Puncture wound without foreign body of left lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  106. S91.236
    Puncture wound without foreign body of unspecified lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  107. S91.239
    Puncture wound without foreign body of unspecified toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  108. S91.24
    Puncture wound with foreign body of toe with damage to nail
    Header
  109. S91.241
    Puncture wound with foreign body of right great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  110. S91.242
    Puncture wound with foreign body of left great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  111. S91.243
    Puncture wound with foreign body of unspecified great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  112. S91.244
    Puncture wound with foreign body of right lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  113. S91.245
    Puncture wound with foreign body of left lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  114. S91.246
    Puncture wound with foreign body of unspecified lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  115. S91.249
    Puncture wound with foreign body of unspecified toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  116. S91.25
    Open bite of toe with damage to nail
    Header
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Bite of toe with damage to nail NOS

    Excludes1

  117. S91.251
    Open bite of right great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  118. S91.252
    Open bite of left great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  119. S91.253
    Open bite of unspecified great toe with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  120. S91.254
    Open bite of right lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  121. S91.255
    Open bite of left lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  122. S91.256
    Open bite of unspecified lesser toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  123. S91.259
    Open bite of unspecified toe(s) with damage to nail +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  124. S91.3
    Open wound of foot
    Header
  125. S91.30
    Unspecified open wound of foot
    Header
  126. S91.301
    Unspecified open wound, right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  127. S91.302
    Unspecified open wound, left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  128. S91.309
    Unspecified open wound, unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  129. S91.31
    Laceration without foreign body of foot
    Header
  130. S91.311
    Laceration without foreign body, right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  131. S91.312
    Laceration without foreign body, left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  132. S91.319
    Laceration without foreign body, unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  133. S91.32
    Laceration with foreign body of foot
    Header
  134. S91.321
    Laceration with foreign body, right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  135. S91.322
    Laceration with foreign body, left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  136. S91.329
    Laceration with foreign body, unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  137. S91.33
    Puncture wound without foreign body of foot
    Header
  138. S91.331
    Puncture wound without foreign body, right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  139. S91.332
    Puncture wound without foreign body, left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  140. S91.339
    Puncture wound without foreign body, unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  141. S91.34
    Puncture wound with foreign body of foot
    Header
  142. S91.341
    Puncture wound with foreign body, right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  143. S91.342
    Puncture wound with foreign body, left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  144. S91.349
    Puncture wound with foreign body, unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  145. S91.35
    Open bite of foot
    Header
    Excludes1 1

    Excludes1

  146. S91.351
    Open bite, right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  147. S91.352
    Open bite, left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  148. S91.359
    Open bite, unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters

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 S91

Excludes1

  • open fracture of ankle, foot and toes (S92.-with 7th character B) S92
  • traumatic amputation of ankle and foot (S98.-) S98

Code also

  • any associated wound infection

Notes that also apply

Block S90-S99 instructions (Excludes2 4): printed on the block page.

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

7th characters

7th characters for S91 defined here

The appropriate 7th character is to be added to each code from category S91

7th characters for S91
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

  • Wound, openankle → S91.00-
  • Lacerationankle → S91.01-
  • Punctureankle → S91.039
  • Bite(s) (animal) (human)ankle → S91.05-
  • Wound, opentoe(s) → S91.109
  • Lacerationtoe(s) → S91.119
  • Puncturetoe(s) → S91.139
  • Bite(s) (animal) (human)toe(s) → S91.15-
  • Wound, openfoot (except toe(s) alone) → S91.30-
  • Lacerationfoot (except toe(s) alone) → S91.319
  • Puncturefoot (except toe(s) alone) → S91.339
  • Bite(s) (animal) (human)foot (except toe(s) alone) → S91.35-
  • Punctureankleright → S91.031
  • Punctureankleleft → S91.032
  • Wound, opentoe(s)great → S91.103
  • Wound, opentoe(s)lesser → S91.106
  • Lacerationtoe(s)great → S91.113
  • Lacerationtoe(s)lesser → S91.116
  • Puncturetoe(s)great → S91.133
  • Puncturetoe(s)lesser → S91.136
  • Bite(s) (animal) (human)toe(s)great → S91.15-
  • Bite(s) (animal) (human)toe(s)lesser → S91.15-
  • Lacerationfoot (except toe(s) alone)right → S91.311
  • Lacerationfoot (except toe(s) alone)left → S91.312
  • Lacerationfoot (except toe(s) alone)with foreign body → S91.329
  • Puncturefoot (except toe(s) alone)right → S91.331
  • Puncturefoot (except toe(s) alone)left → S91.332
  • Puncturefoot (except toe(s) alone)with foreign body → S91.349
  • Lacerationanklewithforeign body → S91.02-
  • Punctureanklewithforeign body → S91.049
  • Wound, opentoe(s)greatright → S91.101
  • Wound, opentoe(s)greatleft → S91.102
  • Wound, opentoe(s)lesserright → S91.104
  • Wound, opentoe(s)lesserleft → S91.105
  • Lacerationtoe(s)greatright → S91.111
  • Lacerationtoe(s)greatleft → S91.112
  • Lacerationtoe(s)lesserright → S91.114
  • Lacerationtoe(s)lesserleft → S91.115
  • Lacerationtoe(s)withforeign body → S91.129
  • Puncturetoe(s)greatright → S91.131

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

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

Hierarchy