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S79.131K vs S79.139K

S79.131K (Salter-Harris Type III physeal fracture of lower end of right femur, subsequent encounter for fracture with nonunion) compared with S79.139K (Salter-Harris Type III physeal fracture of lower end of unspecified femur, subsequent encounter for fracture with nonunion), from the official CMS tabular data. S79.131K and S79.139K code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S79.131K
Right
Salter-Harris Type III physeal fracture of lower end of right femur, subsequent encounter for fracture with nonunion
S79.139K
Unspecified
Salter-Harris Type III physeal fracture of lower end of unspecified femur, subsequent encounter for fracture with nonunion

Same condition; these differ only in which side is documented.

These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.

Source: ICD-10-CM tabular list (laterality variant derived from the code title)

Can these codes be reported together?

Same condition, opposite side. S79.131K and S79.139K name the same condition on opposite sides of the body.

Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.

Side by side

S79.131KSalter-Harris Type III physeal fracture of lower end of right femur, subsequent encounter for fracture with nonunionS79.139KSalter-Harris Type III physeal fracture of lower end of unspecified femur, subsequent encounter for fracture with nonunion
Billing statusBillableBillable
ClassificationS00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
DefinitionSalter-Harris Type III physeal fracture of lower end of right femur, subsequent encounter for fracture with nonunion is a billable ICD-10-CM diagnosis code (S79.131K).Salter-Harris Type III physeal fracture of lower end of unspecified femur, subsequent encounter for fracture with nonunion is a billable ICD-10-CM diagnosis code (S79.139K).
7th characterThe appropriate 7th character is to be added to each code from subcategories S79.0 and S79.1The appropriate 7th character is to be added to each code from subcategories S79.0 and S79.1

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources