S79.121K Salter-Harris Type II physeal fracture of lower end of right femur, subsequent encounter for fracture with nonunion

Billable ICD-10-CM code, FY2026.

Built from S79.121 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

Code annotations containing back-references to S79.121K

Back-references to S79.1

• Type 2 Excludes: S72.0 Fracture of head and neck of femur ("physeal fracture of lower end of femur (S79.1-)")
• Type 2 Excludes: S72.4 Fracture of lower end of femur ("physeal fracture of lower end of femur (S79.1-)")

Nearby codes

• S79.12 Salter-Harris Type II physeal fracture of lower end of femur
• S79.121 Salter-Harris Type II physeal fracture of lower end of right femur
• S79.121A Salter-Harris Type II physeal fracture of lower end of right femur, initial encounter for closed fracture
• S79.121D Salter-Harris Type II physeal fracture of lower end of right femur, subsequent encounter for fracture with routine healing
• S79.121G Salter-Harris Type II physeal fracture of lower end of right femur, subsequent encounter for fracture with delayed healing
• S79.121K Salter-Harris Type II physeal fracture of lower end of right femur, subsequent encounter for fracture with nonunion (this code)
• S79.121P Salter-Harris Type II physeal fracture of lower end of right femur, subsequent encounter for fracture with malunion
• S79.121S Salter-Harris Type II physeal fracture of lower end of right femur, sequela
• S79.122 Salter-Harris Type II physeal fracture of lower end of left femur
• S79.122A Salter-Harris Type II physeal fracture of lower end of left femur, initial encounter for closed fracture
• S79.122D Salter-Harris Type II physeal fracture of lower end of left femur, subsequent encounter for fracture with routine healing