FY2027 ICD-10-CM reference
S88: Traumatic amputation of lower leg
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Traumatic amputation of lower leg. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
More specific FY2027 codes
- S88.0: Traumatic amputation at knee levelNonbillable heading
- S88.1: Traumatic amputation at level between knee and ankleNonbillable heading
- S88.9: Traumatic amputation of lower leg, level unspecifiedNonbillable heading
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Instructional note
Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
Source: S00-T88 (chapter, inherited).
Instructional note
code to identify any retained foreign body, if applicable (Z18.-)
Source: S00-T88 (chapter, inherited).
Excludes2
birth trauma (P10-P15)
Source: S00-T88 (chapter, inherited).
Excludes2
obstetric trauma (O70-O71)
Source: S00-T88 (chapter, inherited).
Instructional note
The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Source: S00-T88 (chapter, inherited).
Excludes2
burns and corrosions (T20-T32)
Source: S80-S89 (section, inherited).
Excludes2
frostbite (T33-T34)
Source: S80-S89 (section, inherited).
Excludes2
injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)
Source: S80-S89 (section, inherited).
Excludes2
insect bite or sting, venomous (T63.4)
Source: S80-S89 (section, inherited).
Instructional note
An amputation not identified as partial or complete should be coded to complete
Source: S88 (category, direct).
Excludes1
traumatic amputation of ankle and foot (S98.-)
Source: S88 (category, direct).
Seventh-character instruction
The appropriate 7th character is to be added to each code from category S88
Source: S88 (category, direct).
Instructional note
initial encounter
Source: S88 (category, direct).
Instructional note
subsequent encounter
Source: S88 (category, direct).
Instructional note
sequela
Source: S88 (category, direct).
Seventh-character definitions
- A: initial encounter
- D: subsequent encounter
- S: sequela
Compare the FY2027 additions, removals and billable-status changes
What does S88 mean in FY2027?
The official ICD-10-CM descriptor is Traumatic amputation of lower leg. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is S88 billable in FY2027?
The FY2027 order file marks S88 as a nonbillable heading. Select a complete billable child code.
Does S88 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition