S99.109K Unspecified physeal fracture of unspecified metatarsal, subsequent encounter for fracture with nonunion

Billable ICD-10-CM code, FY2026.

Built from S99.109 with 7th character K (subsequent encounter for fracture with nonunion).

Applies from S99.1 Physeal fracture of metatarsal

7th character note

• The appropriate 7th character is to be added to each code from subcategories S99.1

7th character required

• A — initial encounter for closed fracture
• B — initial encounter for open 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 S99.109K

Back-references to S99.1

• Type 2 Excludes: S92.3 Fracture of metatarsal bone(s) ("Physeal fracture of metatarsal (S99.1-)")

Back-references to S99

• Type 2 Excludes: S89 Other and unspecified injuries of lower leg ("other and unspecified injuries of ankle and foot (S99.-)")

Nearby codes

• S99.109 Unspecified physeal fracture of unspecified metatarsal
• S99.109A Unspecified physeal fracture of unspecified metatarsal, initial encounter for closed fracture
• S99.109B Unspecified physeal fracture of unspecified metatarsal, initial encounter for open fracture
• S99.109D Unspecified physeal fracture of unspecified metatarsal, subsequent encounter for fracture with routine healing
• S99.109G Unspecified physeal fracture of unspecified metatarsal, subsequent encounter for fracture with delayed healing
• S99.109K Unspecified physeal fracture of unspecified metatarsal, subsequent encounter for fracture with nonunion (this code)
• S99.109P Unspecified physeal fracture of unspecified metatarsal, subsequent encounter for fracture with malunion
• S99.109S Unspecified physeal fracture of unspecified metatarsal, sequela
• S99.11 Salter-Harris Type I physeal fracture of metatarsal
• S99.111 Salter-Harris Type I physeal fracture of right metatarsal
• S99.111A Salter-Harris Type I physeal fracture of right metatarsal, initial encounter for closed fracture