FY2027 ICD-10-CM reference
S79: Other and unspecified injuries of hip and thigh
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Other and unspecified injuries of hip and thigh. 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
- S79.0: Physeal fracture of upper end of femurNonbillable heading
- S79.1: Physeal fracture of lower end of femurNonbillable heading
- S79.8: Other specified injuries of hip and thighNonbillable heading
- S79.9: Unspecified injury of hip and thighNonbillable 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: S70-S79 (section, inherited).
Excludes2
frostbite (T33-T34)
Source: S70-S79 (section, inherited).
Excludes2
snake bite (T63.0-)
Source: S70-S79 (section, inherited).
Excludes2
venomous insect bite or sting (T63.4-)
Source: S70-S79 (section, inherited).
Instructional note
A fracture not indicated as open or closed should be coded to closed
Source: S79 (category, direct).
Seventh-character instruction
The appropriate 7th character is to be added to each code from subcategories S79.0 and S79.1
Source: S79 (category, direct).
Instructional note
initial encounter for closed fracture
Source: S79 (category, direct).
Instructional note
subsequent encounter for fracture with routine healing
Source: S79 (category, direct).
Instructional note
subsequent encounter for fracture with delayed healing
Source: S79 (category, direct).
Instructional note
subsequent encounter for fracture with nonunion
Source: S79 (category, direct).
Instructional note
subsequent encounter for fracture with malunion
Source: S79 (category, direct).
Instructional note
sequela
Source: S79 (category, direct).
Seventh-character definitions
- A: initial encounter for closed fracture
- D: subsequent encounter for fracture with routine healing
- G: subsequent encounter for fracture with delayed healing
- K: subsequent encounter for fracture with nonunion
- P: subsequent encounter for fracture with malunion
- S: sequela
Compare the FY2027 additions, removals and billable-status changes
What does S79 mean in FY2027?
The official ICD-10-CM descriptor is Other and unspecified injuries of hip and thigh. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is S79 billable in FY2027?
The FY2027 order file marks S79 as a nonbillable heading. Select a complete billable child code.
Does S79 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