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S79.121P vs S79.122P

S79.121P (Salter-Harris Type II physeal fracture of lower end of right femur, subsequent encounter for fracture with malunion) compared with S79.122P (Salter-Harris Type II physeal fracture of lower end of left femur, subsequent encounter for fracture with malunion), from the official CMS tabular data. S79.121P and S79.122P code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S79.121P
Right
Salter-Harris Type II physeal fracture of lower end of right femur, subsequent encounter for fracture with malunion
S79.122P
Left
Salter-Harris Type II physeal fracture of lower end of left femur, subsequent encounter for fracture with malunion

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. S79.121P and S79.122P 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

S79.121PSalter-Harris Type II physeal fracture of lower end of right femur, subsequent encounter for fracture with malunionS79.122PSalter-Harris Type II physeal fracture of lower end of left femur, subsequent encounter for fracture with malunion
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 II physeal fracture of lower end of right femur, subsequent encounter for fracture with malunion is a billable ICD-10-CM diagnosis code (S79.121P).Salter-Harris Type II physeal fracture of lower end of left femur, subsequent encounter for fracture with malunion is a billable ICD-10-CM diagnosis code (S79.122P).
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