DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

S99 Other and unspecified injuries of ankle and foot

  • Header · not billable
  • Some codes take a 7th character

S99 is not billable. The category heads 414 billable codes in FY2027, grouped under 5 subdivisions.

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. S99 Other and unspecified injuries of ankle and foot
Billable codes
414
Subdivisions
5
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
24

Codes in S99

  1. S99.0
    Physeal fracture of calcaneus
    Header
  2. S99.00
    Unspecified physeal fracture of calcaneus
    Header
  3. S99.001
    Unspecified physeal fracture of right calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  4. S99.002
    Unspecified physeal fracture of left calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  5. S99.009
    Unspecified physeal fracture of unspecified calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  6. S99.01
    Salter-Harris Type I physeal fracture of calcaneus
    Header
  7. S99.011
    Salter-Harris Type I physeal fracture of right calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  8. S99.012
    Salter-Harris Type I physeal fracture of left calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  9. S99.019
    Salter-Harris Type I physeal fracture of unspecified calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  10. S99.02
    Salter-Harris Type II physeal fracture of calcaneus
    Header
  11. S99.021
    Salter-Harris Type II physeal fracture of right calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  12. S99.022
    Salter-Harris Type II physeal fracture of left calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  13. S99.029
    Salter-Harris Type II physeal fracture of unspecified calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  14. S99.03
    Salter-Harris Type III physeal fracture of calcaneus
    Header
  15. S99.031
    Salter-Harris Type III physeal fracture of right calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  16. S99.032
    Salter-Harris Type III physeal fracture of left calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  17. S99.039
    Salter-Harris Type III physeal fracture of unspecified calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  18. S99.04
    Salter-Harris Type IV physeal fracture of calcaneus
    Header
  19. S99.041
    Salter-Harris Type IV physeal fracture of right calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  20. S99.042
    Salter-Harris Type IV physeal fracture of left calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  21. S99.049
    Salter-Harris Type IV physeal fracture of unspecified calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  22. S99.09
    Other physeal fracture of calcaneus
    Header
  23. S99.091
    Other physeal fracture of right calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  24. S99.092
    Other physeal fracture of left calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  25. S99.099
    Other physeal fracture of unspecified calcaneus +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  26. S99.1
    Physeal fracture of metatarsal
    Header
  27. S99.10
    Unspecified physeal fracture of metatarsal
    Header
  28. S99.101
    Unspecified physeal fracture of right metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  29. S99.102
    Unspecified physeal fracture of left metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  30. S99.109
    Unspecified physeal fracture of unspecified metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  31. S99.11
    Salter-Harris Type I physeal fracture of metatarsal
    Header
  32. S99.111
    Salter-Harris Type I physeal fracture of right metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  33. S99.112
    Salter-Harris Type I physeal fracture of left metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  34. S99.119
    Salter-Harris Type I physeal fracture of unspecified metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  35. S99.12
    Salter-Harris Type II physeal fracture of metatarsal
    Header
  36. S99.121
    Salter-Harris Type II physeal fracture of right metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 4 of 7 7th characters
  37. S99.122
    Salter-Harris Type II physeal fracture of left metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  38. S99.129
    Salter-Harris Type II physeal fracture of unspecified metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  39. S99.13
    Salter-Harris Type III physeal fracture of metatarsal
    Header
  40. S99.131
    Salter-Harris Type III physeal fracture of right metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  41. S99.132
    Salter-Harris Type III physeal fracture of left metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  42. S99.139
    Salter-Harris Type III physeal fracture of unspecified metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  43. S99.14
    Salter-Harris Type IV physeal fracture of metatarsal
    Header
  44. S99.141
    Salter-Harris Type IV physeal fracture of right metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  45. S99.142
    Salter-Harris Type IV physeal fracture of left metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  46. S99.149
    Salter-Harris Type IV physeal fracture of unspecified metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  47. S99.19
    Other physeal fracture of metatarsal
    Header
  48. S99.191
    Other physeal fracture of right metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  49. S99.192
    Other physeal fracture of left metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  50. S99.199
    Other physeal fracture of unspecified metatarsal +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  51. S99.2
    Physeal fracture of phalanx of toe
    Header
  52. S99.20
    Unspecified physeal fracture of phalanx of toe
    Header
  53. S99.201
    Unspecified physeal fracture of phalanx of right toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  54. S99.202
    Unspecified physeal fracture of phalanx of left toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  55. S99.209
    Unspecified physeal fracture of phalanx of unspecified toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  56. S99.21
    Salter-Harris Type I physeal fracture of phalanx of toe
    Header
  57. S99.211
    Salter-Harris Type I physeal fracture of phalanx of right toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  58. S99.212
    Salter-Harris Type I physeal fracture of phalanx of left toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  59. S99.219
    Salter-Harris Type I physeal fracture of phalanx of unspecified toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  60. S99.22
    Salter-Harris Type II physeal fracture of phalanx of toe
    Header
  61. S99.221
    Salter-Harris Type II physeal fracture of phalanx of right toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  62. S99.222
    Salter-Harris Type II physeal fracture of phalanx of left toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  63. S99.229
    Salter-Harris Type II physeal fracture of phalanx of unspecified toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  64. S99.23
    Salter-Harris Type III physeal fracture of phalanx of toe
    Header
  65. S99.231
    Salter-Harris Type III physeal fracture of phalanx of right toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  66. S99.232
    Salter-Harris Type III physeal fracture of phalanx of left toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  67. S99.239
    Salter-Harris Type III physeal fracture of phalanx of unspecified toe +7th: A B D G K P S
    Needs 7th characterExempt: 4 of 7 7th characters
  68. S99.24
    Salter-Harris Type IV physeal fracture of phalanx of toe
    Header
  69. S99.241
    Salter-Harris Type IV physeal fracture of phalanx of right toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  70. S99.242
    Salter-Harris Type IV physeal fracture of phalanx of left toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  71. S99.249
    Salter-Harris Type IV physeal fracture of phalanx of unspecified toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  72. S99.29
    Other physeal fracture of phalanx of toe
    Header
  73. S99.291
    Other physeal fracture of phalanx of right toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  74. S99.292
    Other physeal fracture of phalanx of left toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  75. S99.299
    Other physeal fracture of phalanx of unspecified toe +7th: A B D G K P S
    Needs 7th characterExempt: 5 of 7 7th characters
  76. S99.8
    Other specified injuries of ankle and foot
    Header
  77. S99.81
    Other specified injuries of ankle
    Header
  78. S99.811
    Other specified injuries of right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  79. S99.812
    Other specified injuries of left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  80. S99.819
    Other specified injuries of unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  81. S99.82
    Other specified injuries of foot
    Header
  82. S99.821
    Other specified injuries of right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  83. S99.822
    Other specified injuries of left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  84. S99.829
    Other specified injuries of unspecified foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  85. S99.9
    Unspecified injury of ankle and foot
    Header
  86. S99.91
    Unspecified injury of ankle
    Header
  87. S99.911
    Unspecified injury of right ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  88. S99.912
    Unspecified injury of left ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  89. S99.919
    Unspecified injury of unspecified ankle +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  90. S99.92
    Unspecified injury of foot
    Header
  91. S99.921
    Unspecified injury of right foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  92. S99.922
    Unspecified injury of left foot +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  93. S99.929
    Unspecified injury of 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

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 S99.0 defined at S99.0

The appropriate 7th character is to be added to each code from subcategories S99.0

7th characters for S99.0
7thMeaning (NCHS)
Ainitial encounter for closed fracture
Binitial encounter for open fracture
Dsubsequent encounter for fracture with routine healing
Gsubsequent encounter for fracture with delayed healing
Ksubsequent encounter for fracture with nonunion
Psubsequent encounter for fracture with malunion
Ssequela

7th characters for S99.1 defined at S99.1

The appropriate 7th character is to be added to each code from subcategories S99.1

7th characters for S99.1
7thMeaning (NCHS)
Ainitial encounter for closed fracture
Binitial encounter for open fracture
Dsubsequent encounter for fracture with routine healing
Gsubsequent encounter for fracture with delayed healing
Ksubsequent encounter for fracture with nonunion
Psubsequent encounter for fracture with malunion
Ssequela

7th characters for S99.2 defined at S99.2

The appropriate 7th character is to be added to each code from subcategories S99.2

7th characters for S99.2
7thMeaning (NCHS)
Ainitial encounter for closed fracture
Binitial encounter for open fracture
Dsubsequent encounter for fracture with routine healing
Gsubsequent encounter for fracture with delayed healing
Ksubsequent encounter for fracture with nonunion
Psubsequent encounter for fracture with malunion
Ssequela

7th characters for S99.8 defined at S99.8

The appropriate 7th character is to be added to each code from subcategory S99.8

7th characters for S99.8
7thMeaning (NCHS)
Ainitial encounter
Dsubsequent encounter
Ssequela

7th characters for S99.9 defined at S99.9

The appropriate 7th character is to be added to each code from subcategory S99.9

7th characters for S99.9
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

  • Injuryankle → S99.91-
  • Injuryfoot → S99.92-
  • Injurytoe → S99.92-
  • Fracture, traumatic (abduction) (adduction) (separation)metatarsal bonephyseal → S99.10-
  • Injuryanklespecified type NEC → S99.81-
  • Injuryfootspecified type NEC → S99.82-
  • Injurytoespecified type NEC → S99.82-
  • Fracture, traumatic (abduction) (adduction) (separation)tarsal bone(s)calcaneusphyseal → S99.00-
  • Fracture, traumatic (abduction) (adduction) (separation)metatarsal bonephysealspecified NEC → S99.19-
  • Fracture, traumatic (abduction) (adduction) (separation)toephysealphalanx → S99.20-
  • Fracture, traumatic (abduction) (adduction) (separation)tarsal bone(s)calcaneusphysealspecified NEC → S99.09-
  • Fracture, traumatic (abduction) (adduction) (separation)metatarsal bonephysealSalter-HarrisType I → S99.11-
  • Fracture, traumatic (abduction) (adduction) (separation)metatarsal bonephysealSalter-HarrisType II → S99.12-
  • Fracture, traumatic (abduction) (adduction) (separation)metatarsal bonephysealSalter-HarrisType III → S99.13-
  • Fracture, traumatic (abduction) (adduction) (separation)metatarsal bonephysealSalter-HarrisType IV → S99.14-
  • Fracture, traumatic (abduction) (adduction) (separation)toephysealphalanxspecified NEC → S99.29-
  • Fracture, traumatic (abduction) (adduction) (separation)tarsal bone(s)calcaneusphysealSalter-HarrisType I → S99.01-
  • Fracture, traumatic (abduction) (adduction) (separation)tarsal bone(s)calcaneusphysealSalter-HarrisType II → S99.02-
  • Fracture, traumatic (abduction) (adduction) (separation)tarsal bone(s)calcaneusphysealSalter-HarrisType III → S99.03-
  • Fracture, traumatic (abduction) (adduction) (separation)tarsal bone(s)calcaneusphysealSalter-HarrisType IV → S99.04-
  • Fracture, traumatic (abduction) (adduction) (separation)toephysealphalanxSalter-HarrisType I → S99.21-
  • Fracture, traumatic (abduction) (adduction) (separation)toephysealphalanxSalter-HarrisType II → S99.22-
  • Fracture, traumatic (abduction) (adduction) (separation)toephysealphalanxSalter-HarrisType III → S99.23-
  • Fracture, traumatic (abduction) (adduction) (separation)toephysealphalanxSalter-HarrisType IV → S99.24-

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

Hierarchy