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S72.21XM vs S72.23XM

S72.21XM (Displaced subtrochanteric fracture of right femur, subsequent encounter for open fracture type I or II with nonunion) compared with S72.23XM (Displaced subtrochanteric fracture of unspecified femur, subsequent encounter for open fracture type I or II with nonunion), from the official CMS tabular data. S72.21XM and S72.23XM code the same condition on opposite sides. MedCoder-derived

Relationship

Review

Laterality relationship

S72.21XM
Right
Displaced subtrochanteric fracture of right femur, subsequent encounter for open fracture type I or II with nonunion
S72.23XM
Unspecified
Displaced subtrochanteric fracture of unspecified femur, subsequent encounter for open fracture type I or II 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. S72.21XM and S72.23XM 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

S72.21XMDisplaced subtrochanteric fracture of right femur, subsequent encounter for open fracture type I or II with nonunionS72.23XMDisplaced subtrochanteric fracture of unspecified femur, subsequent encounter for open fracture type I or II with nonunion
Billing statusBillableBillable
ClassificationS00-T88 — Injury, poisoning and certain other consequences of external causesS00-T88 — Injury, poisoning and certain other consequences of external causes
DefinitionDisplaced subtrochanteric fracture of right femur, subsequent encounter for open fracture type I or II with nonunion is a billable ICD-10-CM diagnosis code (S72.21M).Displaced subtrochanteric fracture of unspecified femur, subsequent encounter for open fracture type I or II with nonunion is a billable ICD-10-CM diagnosis code (S72.23M).
7th characterThe appropriate 7th character is to be added to all codes from category S72The appropriate 7th character is to be added to all codes from category S72

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