S79.099K Other physeal fracture of upper end of unspecified femur, subsequent encounter for fracture with nonunion

Billable ICD-10-CM code, FY2026.

Built from S79.099 with 7th character K (subsequent encounter for fracture with nonunion).

Applies from S79 Other and unspecified injuries of hip and thigh

7th character note

• The appropriate 7th character is to be added to each code from subcategories S79.0 and S79.1

Notes

• A fracture not indicated as open or closed should be coded to closed

7th character required

• 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

Applies from S79.0 Physeal fracture of upper end of femur

Excludes1 (never code together)

• apophyseal fracture of upper end of femur (S72.13-)
• nontraumatic slipped upper femoral epiphysis (M93.0-)

Medicare Code Edits (MCE v43.1 (April 2026))

• Unspecified code (laterality): Unspecified codes for which a more specific code identifying laterality (right, left, bilateral) exists within the same code family.

Code annotations containing back-references to S79.099K

Back-references to S79.0

• Type 2 Excludes: S72.0 Fracture of head and neck of femur ("physeal fracture of upper end of femur (S79.0-)")

Nearby codes

• S79.092S Other physeal fracture of upper end of left femur, sequela
• S79.099 Other physeal fracture of upper end of unspecified femur
• S79.099A Other physeal fracture of upper end of unspecified femur, initial encounter for closed fracture
• S79.099D Other physeal fracture of upper end of unspecified femur, subsequent encounter for fracture with routine healing
• S79.099G Other physeal fracture of upper end of unspecified femur, subsequent encounter for fracture with delayed healing
• S79.099K Other physeal fracture of upper end of unspecified femur, subsequent encounter for fracture with nonunion (this code)
• S79.099P Other physeal fracture of upper end of unspecified femur, subsequent encounter for fracture with malunion
• S79.099S Other physeal fracture of upper end of unspecified femur, sequela
• S79.1 Physeal fracture of lower end of femur
• S79.10 Unspecified physeal fracture of lower end of femur
• S79.101 Unspecified physeal fracture of lower end of right femur