S88.91 – Complete traumatic amputation of lower leg, level unspecified

ICD-10-CM 2027 diagnosis code · Injuries to the knee and lower leg

Non-billable header

ICD-10-CM code S88.91

Code: S88.91 (claims format: S8891)
Description: Complete traumatic amputation of lower leg, level unspecified
Short description: Complete traumatic amputation of lower leg, level unsp
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
Block: S80-S89 Injuries to the knee and lower leg
Parent codes: S88 › S88.9

Billable codes under S88.91

S88.91 is a header code and cannot be used on claims. Choose the most specific code:

S88.911 – Complete traumatic amputation of right lower leg, level unspecifiedHeader (more codes below)
S88.912 – Complete traumatic amputation of left lower leg, level unspecifiedHeader (more codes below)
S88.919 – Complete traumatic amputation of unspecified lower leg, level unspecifiedHeader (more codes below)

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).

Character	Meaning
`A`	initial encounter
`D`	subsequent encounter
`S`	sequela

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

S88 – Traumatic amputation of lower leg

Applicable to:

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

Excludes1 (not coded here):

traumatic amputation of ankle and foot (S98.-)

7th character note:

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

Block S80-S89

Excludes2 (not included here):

burns and corrosions (T20-T32)
frostbite (T33-T34)
injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)
insect bite or sting, venomous (T63.4)

Index terms for S88.91

Entries in the ICD-10-CM alphabetic index that lead to this code:

Amputation, traumatic, leg

Related codes in S88.9

S88.92 – Partial traumatic amputation of lower leg, level unspecifiedHeader

Frequently asked questions

What is ICD-10 code S88.91?

S88.91 is the ICD-10-CM code for complete traumatic amputation of lower leg, level unspecified, in the block S80-S89 (Injuries to the knee and lower leg).

Is S88.91 a billable code?

No. S88.91 is a header code with more specific child codes; report one of the billable codes listed above.

What category does S88.91 belong to?

It belongs to category S88 – Traumatic amputation of lower leg.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.