S59.121K Salter-Harris Type II physeal fracture of upper end of radius, right arm, subsequent encounter for fracture with nonunion

Billable ICD-10-CM code, FY2026.

Built from S59.121 with 7th character K (subsequent encounter for fracture with nonunion).

Applies from S59 Other and unspecified injuries of elbow and forearm

Excludes2 (not included here)

• other and unspecified injuries of wrist and hand (S69.-)

7th character note

• The appropriate 7th character is to be added to each code from subcategories S59.0, S59.1, and S59.2

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

Nearby codes

• S59.12 Salter-Harris Type II physeal fracture of upper end of radius
• S59.121 Salter-Harris Type II physeal fracture of upper end of radius, right arm
• S59.121A Salter-Harris Type II physeal fracture of upper end of radius, right arm, initial encounter for closed fracture
• S59.121D Salter-Harris Type II physeal fracture of upper end of radius, right arm, subsequent encounter for fracture with routine healing
• S59.121G Salter-Harris Type II physeal fracture of upper end of radius, right arm, subsequent encounter for fracture with delayed healing
• S59.121K Salter-Harris Type II physeal fracture of upper end of radius, right arm, subsequent encounter for fracture with nonunion (this code)
• S59.121P Salter-Harris Type II physeal fracture of upper end of radius, right arm, subsequent encounter for fracture with malunion
• S59.121S Salter-Harris Type II physeal fracture of upper end of radius, right arm, sequela
• S59.122 Salter-Harris Type II physeal fracture of upper end of radius, left arm
• S59.122A Salter-Harris Type II physeal fracture of upper end of radius, left arm, initial encounter for closed fracture
• S59.122D Salter-Harris Type II physeal fracture of upper end of radius, left arm, subsequent encounter for fracture with routine healing