DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

S01 Open wound of head

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

S01 is not billable. The category heads 270 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

Where it sits

  1. Chapter 19 Injury, poisoning and certain other consequences of external causes (S00-T88)
  2. S00-S09 Injuries to the head (S00-S09)
  3. S01 Open wound of head
Billable codes
270
Subdivisions
8
CC / MCC codes
3 / 0
HCC V28 codes
0
New FY2027
0
Index entries
77

Codes in S01

  1. S01.0
    Open wound of scalp
    Header
    Excludes1 1

    Excludes1

    • avulsion of scalp (S08.0-) S08.0
  2. S01.00
    Unspecified open wound of scalp +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  3. S01.01
    Laceration without foreign body of scalp +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  4. S01.02
    Laceration with foreign body of scalp +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  5. S01.03
    Puncture wound without foreign body of scalp +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  6. S01.04
    Puncture wound with foreign body of scalp +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  7. S01.05
    Open bite of scalp +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Bite of scalp NOS

    Excludes1

  8. S01.1
    Open wound of eyelid and periocular area
    Header
    Inclusion terms 1

    Inclusion terms

    • Open wound of eyelid and periocular area with or without involvement of lacrimal passages
  9. S01.10
    Unspecified open wound of eyelid and periocular area
    Header
  10. S01.101
    Unspecified open wound of right eyelid and periocular area +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  11. S01.102
    Unspecified open wound of left eyelid and periocular area +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  12. S01.109
    Unspecified open wound of unspecified eyelid and periocular area +7th: A D S
    Needs 7th characterCC AExempt: 2 of 3 7th characters
  13. S01.11
    Laceration without foreign body of eyelid and periocular area
    Header
  14. S01.111
    Laceration without foreign body of right eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  15. S01.112
    Laceration without foreign body of left eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  16. S01.119
    Laceration without foreign body of unspecified eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  17. S01.12
    Laceration with foreign body of eyelid and periocular area
    Header
  18. S01.121
    Laceration with foreign body of right eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  19. S01.122
    Laceration with foreign body of left eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  20. S01.129
    Laceration with foreign body of unspecified eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  21. S01.13
    Puncture wound without foreign body of eyelid and periocular area
    Header
  22. S01.131
    Puncture wound without foreign body of right eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  23. S01.132
    Puncture wound without foreign body of left eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  24. S01.139
    Puncture wound without foreign body of unspecified eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  25. S01.14
    Puncture wound with foreign body of eyelid and periocular area
    Header
  26. S01.141
    Puncture wound with foreign body of right eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  27. S01.142
    Puncture wound with foreign body of left eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  28. S01.149
    Puncture wound with foreign body of unspecified eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  29. S01.15
    Open bite of eyelid and periocular area
    Header
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Bite of eyelid and periocular area NOS

    Excludes1

    • superficial bite of eyelid and periocular area (S00.26, S00.27) S00.26 S00.27
  30. S01.151
    Open bite of right eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  31. S01.152
    Open bite of left eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  32. S01.159
    Open bite of unspecified eyelid and periocular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  33. S01.2
    Open wound of nose
    Header
  34. S01.20
    Unspecified open wound of nose +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  35. S01.21
    Laceration without foreign body of nose +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  36. S01.22
    Laceration with foreign body of nose +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  37. S01.23
    Puncture wound without foreign body of nose +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  38. S01.24
    Puncture wound with foreign body of nose +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  39. S01.25
    Open bite of nose +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Bite of nose NOS

    Excludes1

  40. S01.3
    Open wound of ear
    Header
  41. S01.30
    Unspecified open wound of ear
    Header
  42. S01.301
    Unspecified open wound of right ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  43. S01.302
    Unspecified open wound of left ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  44. S01.309
    Unspecified open wound of unspecified ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  45. S01.31
    Laceration without foreign body of ear
    Header
  46. S01.311
    Laceration without foreign body of right ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  47. S01.312
    Laceration without foreign body of left ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  48. S01.319
    Laceration without foreign body of unspecified ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  49. S01.32
    Laceration with foreign body of ear
    Header
  50. S01.321
    Laceration with foreign body of right ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  51. S01.322
    Laceration with foreign body of left ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  52. S01.329
    Laceration with foreign body of unspecified ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  53. S01.33
    Puncture wound without foreign body of ear
    Header
  54. S01.331
    Puncture wound without foreign body of right ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  55. S01.332
    Puncture wound without foreign body of left ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  56. S01.339
    Puncture wound without foreign body of unspecified ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  57. S01.34
    Puncture wound with foreign body of ear
    Header
  58. S01.341
    Puncture wound with foreign body of right ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  59. S01.342
    Puncture wound with foreign body of left ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  60. S01.349
    Puncture wound with foreign body of unspecified ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  61. S01.35
    Open bite of ear
    Header
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Bite of ear NOS

    Excludes1

  62. S01.351
    Open bite of right ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  63. S01.352
    Open bite of left ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  64. S01.359
    Open bite of unspecified ear +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  65. S01.4
    Open wound of cheek and temporomandibular area
    Header
  66. S01.40
    Unspecified open wound of cheek and temporomandibular area
    Header
  67. S01.401
    Unspecified open wound of right cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  68. S01.402
    Unspecified open wound of left cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  69. S01.409
    Unspecified open wound of unspecified cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  70. S01.41
    Laceration without foreign body of cheek and temporomandibular area
    Header
  71. S01.411
    Laceration without foreign body of right cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  72. S01.412
    Laceration without foreign body of left cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  73. S01.419
    Laceration without foreign body of unspecified cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  74. S01.42
    Laceration with foreign body of cheek and temporomandibular area
    Header
  75. S01.421
    Laceration with foreign body of right cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  76. S01.422
    Laceration with foreign body of left cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  77. S01.429
    Laceration with foreign body of unspecified cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  78. S01.43
    Puncture wound without foreign body of cheek and temporomandibular area
    Header
  79. S01.431
    Puncture wound without foreign body of right cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  80. S01.432
    Puncture wound without foreign body of left cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  81. S01.439
    Puncture wound without foreign body of unspecified cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  82. S01.44
    Puncture wound with foreign body of cheek and temporomandibular area
    Header
  83. S01.441
    Puncture wound with foreign body of right cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  84. S01.442
    Puncture wound with foreign body of left cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  85. S01.449
    Puncture wound with foreign body of unspecified cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  86. S01.45
    Open bite of cheek and temporomandibular area
    Header
    Inclusion terms 1, Excludes2 1

    Inclusion terms

    • Bite of cheek and temporomandibular area NOS

    Excludes2

    • superficial bite of cheek and temporomandibular area (S00.86, S00.87) S00.86 S00.87
  87. S01.451
    Open bite of right cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  88. S01.452
    Open bite of left cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  89. S01.459
    Open bite of unspecified cheek and temporomandibular area +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  90. S01.5
    Open wound of lip and oral cavity
    Header
    Excludes2 2

    Excludes2

    • tooth dislocation (S03.2) S03.2
    • tooth fracture (S02.5) S02.5
  91. S01.50
    Unspecified open wound of lip and oral cavity
    Header
  92. S01.501
    Unspecified open wound of lip +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  93. S01.502
    Unspecified open wound of oral cavity +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  94. S01.51
    Laceration of lip and oral cavity without foreign body
    Header
  95. S01.511
    Laceration without foreign body of lip +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  96. S01.512
    Laceration without foreign body of oral cavity +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  97. S01.52
    Laceration of lip and oral cavity with foreign body
    Header
  98. S01.521
    Laceration with foreign body of lip +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  99. S01.522
    Laceration with foreign body of oral cavity +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  100. S01.53
    Puncture wound of lip and oral cavity without foreign body
    Header
  101. S01.531
    Puncture wound without foreign body of lip +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  102. S01.532
    Puncture wound without foreign body of oral cavity +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  103. S01.54
    Puncture wound of lip and oral cavity with foreign body
    Header
  104. S01.541
    Puncture wound with foreign body of lip +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  105. S01.542
    Puncture wound with foreign body of oral cavity +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  106. S01.55
    Open bite of lip and oral cavity
    Header
  107. S01.551
    Open bite of lip +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Bite of lip NOS

    Excludes1

    • superficial bite of lip (S00.571) S00.571
  108. S01.552
    Open bite of oral cavity +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Bite of oral cavity NOS

    Excludes1

    • superficial bite of oral cavity (S00.572) S00.572
  109. S01.8
    Open wound of other parts of head
    Header
  110. S01.80
    Unspecified open wound of other part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  111. S01.81
    Laceration without foreign body of other part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  112. S01.82
    Laceration with foreign body of other part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  113. S01.83
    Puncture wound without foreign body of other part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  114. S01.84
    Puncture wound with foreign body of other part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  115. S01.85
    Open bite of other part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Bite of other part of head NOS

    Excludes1

    • superficial bite of other part of head (S00.87) S00.87
  116. S01.9
    Open wound of unspecified part of head
    Header
  117. S01.90
    Unspecified open wound of unspecified part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  118. S01.91
    Laceration without foreign body of unspecified part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  119. S01.92
    Laceration with foreign body of unspecified part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  120. S01.93
    Puncture wound without foreign body of unspecified part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  121. S01.94
    Puncture wound with foreign body of unspecified part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  122. S01.95
    Open bite of unspecified part of head +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1, Excludes1 1

    Inclusion terms

    • Bite of head NOS

    Excludes1

    • superficial bite of head NOS (S00.97) S00.97

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 S01

Excludes1

  • open skull fracture (S02.- with 7th character B) S02

Excludes2

  • injury of eye and orbit (S05.-) S05
  • traumatic amputation of part of head (S08.-) S08

Code also

  • any associated:
  • injury of cranial nerve (S04.-) S04
  • injury of muscle and tendon of head (S09.1-) S09.1
  • intracranial injury (S06.-) S06
  • wound infection

Notes that also apply

Block S00-S09 instructions (Includes 12, Excludes2 9, Code also 1): 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 S01 defined here

The appropriate 7th character is to be added to each code from category S01

7th characters for S01
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, openscalp → S01.00
  • Lacerationscalp → S01.01
  • Puncturescalp → S01.03
  • Bite(s) (animal) (human)scalp → S01.05
  • Wound, openeyelid → S01.10-
  • Lacerationeyelid → S01.11-
  • Punctureeyelid → S01.13-
  • Bite(s) (animal) (human)eyelid → S01.15-
  • Wound, opennose (septum) (sinus) → S01.20
  • Lacerationnose (septum) (sinus) → S01.21
  • Puncturenose (septum) (sinus) → S01.23
  • Bite(s) (animal) (human)nose (septum) (sinus) → S01.25
  • Wound, openear (canal) (external) → S01.30-
  • Lacerationear (canal) (external) → S01.31-
  • Punctureear (canal) (external) → S01.339
  • Bite(s) (animal) (human)ear (canal) (external) → S01.35-
  • Wound, opencheek (external) → S01.40-
  • Lacerationcheek (external) → S01.41-
  • Puncturecheek (external) → S01.439
  • Bite(s) (animal) (human)cheek (external) → S01.45-
  • Wound, openlip → S01.501
  • Wound, openoral cavity → S01.502
  • Lacerationlip → S01.511
  • Lacerationoral cavity → S01.512
  • Puncturelip → S01.531
  • Punctureoral cavity → S01.532
  • Bite(s) (animal) (human)lip → S01.551
  • Bite(s) (animal) (human)oral cavity → S01.552
  • Bite(s) (animal) (human)tongue → S01.552
  • Lacerationforehead → S01.81
  • Wound, openhead → S01.90
  • Lacerationhead → S01.91
  • Puncturehead → S01.93
  • Bite(s) (animal) (human)head → S01.95
  • Lacerationheadscalp → S01.01
  • Lacerationscalpwith foreign body → S01.02
  • Punctureheadscalp → S01.03
  • Puncturescalpwith foreign body → S01.04
  • Wound, openscalpbite → S01.05
  • Lacerationocular NOSadnexa NOS → S01.11-

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

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

Hierarchy