DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

S34 Injury of lumbar and sacral spinal cord and nerves at abdomen, lower back and pelvis level

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

S34 is not billable. The category heads 93 billable codes in FY2027, grouped under 9 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Index → code

  • Injurycauda equina → S34.3
  • Injurylumbosacral plexus → S34.4
  • Contusion (skin surface intact)cauda equina → S34.3

Where it sits

  1. Chapter 19 Injury, poisoning and certain other consequences of external causes (S00-T88)
  2. S30-S39 Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39)
  3. S34 Injury of lumbar and sacral spinal cord and nerves at abdomen, lower back and pelvis level
Billable codes
93
Subdivisions
9
CC / MCC codes
0 / 24
HCC V28 codes
47
New FY2027
0
Index entries
47

Codes in S34

  1. S34.0
    Concussion and edema of lumbar and sacral spinal cord
    Header
  2. S34.01
    Concussion and edema of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
  3. S34.02
    Concussion and edema of sacral spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Concussion and edema of conus medullaris
  4. S34.1
    Other and unspecified injury of lumbar and sacral spinal cord
    Header
  5. S34.10
    Unspecified injury to lumbar spinal cord
    Header
  6. S34.101
    Unspecified injury to L1 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Unspecified injury to lumbar spinal cord level 1
  7. S34.102
    Unspecified injury to L2 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Unspecified injury to lumbar spinal cord level 2
  8. S34.103
    Unspecified injury to L3 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Unspecified injury to lumbar spinal cord level 3
  9. S34.104
    Unspecified injury to L4 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Unspecified injury to lumbar spinal cord level 4
  10. S34.105
    Unspecified injury to L5 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Unspecified injury to lumbar spinal cord level 5
  11. S34.109
    Unspecified injury to unspecified level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
  12. S34.11
    Complete lesion of lumbar spinal cord
    Header
  13. S34.111
    Complete lesion of L1 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Complete lesion of lumbar spinal cord level 1
  14. S34.112
    Complete lesion of L2 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Complete lesion of lumbar spinal cord level 2
  15. S34.113
    Complete lesion of L3 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Complete lesion of lumbar spinal cord level 3
  16. S34.114
    Complete lesion of L4 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Complete lesion of lumbar spinal cord level 4
  17. S34.115
    Complete lesion of L5 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Complete lesion of lumbar spinal cord level 5
  18. S34.119
    Complete lesion of unspecified level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
  19. S34.12
    Incomplete lesion of lumbar spinal cord
    Header
  20. S34.121
    Incomplete lesion of L1 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Incomplete lesion of lumbar spinal cord level 1
  21. S34.122
    Incomplete lesion of L2 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Incomplete lesion of lumbar spinal cord level 2
  22. S34.123
    Incomplete lesion of L3 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Incomplete lesion of lumbar spinal cord level 3
  23. S34.124
    Incomplete lesion of L4 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Incomplete lesion of lumbar spinal cord level 4
  24. S34.125
    Incomplete lesion of L5 level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Incomplete lesion of lumbar spinal cord level 5
  25. S34.129
    Incomplete lesion of unspecified level of lumbar spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
  26. S34.13
    Other and unspecified injury to sacral spinal cord
    Header
    Inclusion terms 1

    Inclusion terms

    • Other injury to conus medullaris
  27. S34.131
    Complete lesion of sacral spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Complete lesion of conus medullaris
  28. S34.132
    Incomplete lesion of sacral spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Incomplete lesion of conus medullaris
  29. S34.139
    Unspecified injury to sacral spinal cord +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Unspecified injury of conus medullaris
  30. S34.2
    Injury of nerve root of lumbar and sacral spine
    Header
  31. S34.21
    Injury of nerve root of lumbar spine +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  32. S34.22
    Injury of nerve root of sacral spine +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  33. S34.3
    Injury of cauda equina +7th: A D S
    Needs 7th characterMCC A182 (some 7th characters)Exempt: 2 of 3 7th characters
  34. S34.4
    Injury of lumbosacral plexus +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  35. S34.5
    Injury of lumbar, sacral and pelvic sympathetic nerves +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 4

    Inclusion terms

    • Injury of celiac ganglion or plexus
    • Injury of hypogastric plexus
    • Injury of mesenteric plexus (inferior) (superior)
    • Injury of splanchnic nerve
  36. S34.6
    Injury of peripheral nerve(s) at abdomen, lower back and pelvis level +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  37. S34.8
    Injury of other nerves at abdomen, lower back and pelvis level +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  38. S34.9
    Injury of unspecified nerves at abdomen, lower back and pelvis level +7th: A D S
    Needs 7th characterExempt: 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 S34

Notes

  • Code to highest level of lumbar cord injury
  • Injuries to the spinal cord (S34.0 and S34.1) refer to the cord level and not bone level injury, and can affect nerve roots at and below the level given. S34.0 S34.1

Code also

  • any associated:
  • fracture of vertebra (S22.0-, S32.0-) S22.0 S32.0
  • open wound of abdomen, lower back and pelvis (S31.-) S31
  • transient paralysis (R29.5) R29.5

Notes that also apply

Block S30-S39 instructions (Includes 6, Excludes2 6): 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 S34 defined here

The appropriate 7th character is to be added to each code from category S34

7th characters for S34
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

  • Concussion (brain) (cerebral) (current)conus medullaris → S34.02
  • Contusion (skin surface intact)conus medullaris (spine) → S34.139
  • Concussion (brain) (cerebral) (current)cauda equina → S34.3
  • Contusion (skin surface intact)cauda equina → S34.3
  • Injurycauda equina → S34.3
  • Injurylumbosacral plexus → S34.4
  • Concussion (brain) (cerebral) (current)spinal (cord)lumbar → S34.01
  • Concussion (brain) (cerebral) (current)spinal (cord)sacral → S34.02
  • Injuryspinal (cord)lumbar → S34.109
  • Contusion (skin surface intact)spinal cordconus medullaris → S34.139
  • Injuryspinal (cord)sacral → S34.139
  • Contusion (skin surface intact)spinal cordcauda equina → S34.3
  • Injurynerve NECabdomen → S34.9
  • Injuryspinal (cord)lumbarconcussion → S34.01
  • Injuryspinal (cord)lumbaredema → S34.01
  • Injuryspinal (cord)lumbarL1 level → S34.101
  • Injuryspinal (cord)lumbarL2 level → S34.102
  • Injuryspinal (cord)lumbarL3 level → S34.103
  • Injuryspinal (cord)lumbarL4 level → S34.104
  • Injuryspinal (cord)lumbarL5 level → S34.105
  • Injuryspinal (cord)lumbarcomplete lesion → S34.119
  • Injuryspinal (cord)lumbarincomplete lesion → S34.129
  • Injuryspinal (cord)sacralcomplete lesion → S34.131
  • Injuryspinal (cord)sacralincomplete lesion → S34.132
  • Injurynerve NEClumbar spinalroot → S34.21
  • Injuryspinal (cord)nerve root NEClumbar → S34.21
  • Injurynerve NECsacral spinalroot → S34.22
  • Injuryspinal (cord)nerve root NECsacral → S34.22
  • Injurynerve NEClumbar spinalsympathetic → S34.5
  • Injurynerve NEClumbosacralsympathetic → S34.5
  • Injurynerve NECsacral spinalsympathetic → S34.5
  • Injurynerve NECabdomenperipheral → S34.6
  • Injurynerve NEClumbar spinalperipheral → S34.6
  • Injurynerve NECsacral spinalperipheral → S34.6
  • Injurynerve NECabdomenspecified site NEC → S34.8
  • Injuryspinal (cord)lumbarcomplete lesionL1 level → S34.111
  • Injuryspinal (cord)lumbarcomplete lesionL2 level → S34.112
  • Injuryspinal (cord)lumbarcomplete lesionL3 level → S34.113
  • Injuryspinal (cord)lumbarcomplete lesionL4 level → S34.114
  • Injuryspinal (cord)lumbarcomplete lesionL5 level → S34.115

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

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

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