DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

S88 Traumatic amputation of lower leg

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

S88 is not billable. The category heads 54 billable codes in FY2027, grouped under 3 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Index → code

  • Amputationtraumatic (complete) (partial)leg (lower) → S88.91-
  • Amputationtraumatic (complete) (partial)leg (lower)partial → S88.92-
  • Amputationtraumatic (complete) (partial)leg (lower)at knee level → S88.01-

Where it sits

  1. Chapter 19 Injury, poisoning and certain other consequences of external causes (S00-T88)
  2. S80-S89 Injuries to the knee and lower leg (S80-S89)
  3. S88 Traumatic amputation of lower leg
Billable codes
54
Subdivisions
3
CC / MCC codes
18 / 0
HCC V28 codes
18
New FY2027
0
Index entries
6

Codes in S88

  1. S88.0
    Traumatic amputation at knee level
    Header
  2. S88.01
    Complete traumatic amputation at knee level
    Header
  3. S88.011
    Complete traumatic amputation at knee level, right lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  4. S88.012
    Complete traumatic amputation at knee level, left lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  5. S88.019
    Complete traumatic amputation at knee level, unspecified lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  6. S88.02
    Partial traumatic amputation at knee level
    Header
  7. S88.021
    Partial traumatic amputation at knee level, right lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  8. S88.022
    Partial traumatic amputation at knee level, left lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  9. S88.029
    Partial traumatic amputation at knee level, unspecified lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  10. S88.1
    Traumatic amputation at level between knee and ankle
    Header
  11. S88.11
    Complete traumatic amputation at level between knee and ankle
    Header
  12. S88.111
    Complete traumatic amputation at level between knee and ankle, right lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  13. S88.112
    Complete traumatic amputation at level between knee and ankle, left lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  14. S88.119
    Complete traumatic amputation at level between knee and ankle, unspecified lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  15. S88.12
    Partial traumatic amputation at level between knee and ankle
    Header
  16. S88.121
    Partial traumatic amputation at level between knee and ankle, right lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  17. S88.122
    Partial traumatic amputation at level between knee and ankle, left lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  18. S88.129
    Partial traumatic amputation at level between knee and ankle, unspecified lower leg +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  19. S88.9
    Traumatic amputation of lower leg, level unspecified
    Header
  20. S88.91
    Complete traumatic amputation of lower leg, level unspecified
    Header
  21. S88.911
    Complete traumatic amputation of right lower leg, level unspecified +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  22. S88.912
    Complete traumatic amputation of left lower leg, level unspecified +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  23. S88.919
    Complete traumatic amputation of unspecified lower leg, level unspecified +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  24. S88.92
    Partial traumatic amputation of lower leg, level unspecified
    Header
  25. S88.921
    Partial traumatic amputation of right lower leg, level unspecified +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  26. S88.922
    Partial traumatic amputation of left lower leg, level unspecified +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 2 of 3 7th characters
  27. S88.929
    Partial traumatic amputation of unspecified lower leg, level unspecified +7th: A D S
    Needs 7th characterCC A405 (some 7th characters)Exempt: 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 S88

Inclusion terms

  • An amputation not identified as partial or complete should be coded to complete

Excludes1

  • traumatic amputation of ankle and foot (S98.-) S98

Notes that also apply

Block S80-S89 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 S88 defined here

The appropriate 7th character is to be added to each code from category S88

7th characters for S88
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

  • Amputationtraumatic (complete) (partial)leg (lower) → S88.91-
  • Amputationtraumatic (complete) (partial)leg (lower)at knee level → S88.01-
  • Amputationtraumatic (complete) (partial)leg (lower)between knee and ankle → S88.11-
  • Amputationtraumatic (complete) (partial)leg (lower)partial → S88.92-
  • Amputationtraumatic (complete) (partial)leg (lower)at knee levelpartial → S88.02-
  • Amputationtraumatic (complete) (partial)leg (lower)between knee and anklepartial → S88.12-

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

Hierarchy