DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

S54 Injury of nerves at forearm level

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

S54 is not billable. The category heads 54 billable codes in FY2027, grouped under 6 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Index → code

  • Injurynerve NECforearm (level) → S54.9-
  • Injurynerve NECulnar (forearm level) → S54.0-
  • Injurynerve NECmedian (forearm level) → S54.1-

Where it sits

  1. Chapter 19 Injury, poisoning and certain other consequences of external causes (S00-T88)
  2. S50-S59 Injuries to the elbow and forearm (S50-S59)
  3. S54 Injury of nerves at forearm level
Billable codes
54
Subdivisions
6
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
6

Codes in S54

  1. S54.0
    Injury of ulnar nerve at forearm level
    Header
    Inclusion terms 1

    Inclusion terms

    • Injury of ulnar nerve NOS
  2. S54.00
    Injury of ulnar nerve at forearm level, unspecified arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  3. S54.01
    Injury of ulnar nerve at forearm level, right arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  4. S54.02
    Injury of ulnar nerve at forearm level, left arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  5. S54.1
    Injury of median nerve at forearm level
    Header
    Inclusion terms 1

    Inclusion terms

    • Injury of median nerve NOS
  6. S54.10
    Injury of median nerve at forearm level, unspecified arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  7. S54.11
    Injury of median nerve at forearm level, right arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  8. S54.12
    Injury of median nerve at forearm level, left arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  9. S54.2
    Injury of radial nerve at forearm level
    Header
    Inclusion terms 1

    Inclusion terms

    • Injury of radial nerve NOS
  10. S54.20
    Injury of radial nerve at forearm level, unspecified arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  11. S54.21
    Injury of radial nerve at forearm level, right arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  12. S54.22
    Injury of radial nerve at forearm level, left arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  13. S54.3
    Injury of cutaneous sensory nerve at forearm level
    Header
  14. S54.30
    Injury of cutaneous sensory nerve at forearm level, unspecified arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  15. S54.31
    Injury of cutaneous sensory nerve at forearm level, right arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  16. S54.32
    Injury of cutaneous sensory nerve at forearm level, left arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  17. S54.8
    Injury of other nerves at forearm level
    Header
  18. S54.8X
    Injury of other nerves at forearm level
    Header
  19. S54.8X1
    Injury of other nerves at forearm level, right arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  20. S54.8X2
    Injury of other nerves at forearm level, left arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  21. S54.8X9
    Injury of other nerves at forearm level, unspecified arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  22. S54.9
    Injury of unspecified nerve at forearm level
    Header
  23. S54.90
    Injury of unspecified nerve at forearm level, unspecified arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  24. S54.91
    Injury of unspecified nerve at forearm level, right arm +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  25. S54.92
    Injury of unspecified nerve at forearm level, left arm +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 S54

Excludes2

  • injury of nerves at wrist and hand level (S64.-) S64

Code also

  • any associated open wound (S51.-) S51

Notes that also apply

Block S50-S59 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 S54 defined here

The appropriate 7th character is to be added to each code from category S54

7th characters for S54
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

  • Injurynerve NECulnar (forearm level) → S54.0-
  • Injurynerve NECmedian (forearm level) → S54.1-
  • Injurynerve NECradial (forearm level) → S54.2-
  • Injurynerve NECforearm (level) → S54.9-
  • Injurynerve NECcutaneous sensoryforearm (level) → S54.3-
  • Injurynerve NECforearm (level)specified site NEC → S54.8

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

Hierarchy