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S52.261K vs S52.263K

S52.261K (Displaced segmental fracture of shaft of ulna, right arm, subsequent encounter for closed fracture with nonunion) compared with S52.263K (Displaced segmental fracture of shaft of ulna, unspecified arm, subsequent encounter for closed fracture with nonunion), from the official CMS tabular data. S52.261K and S52.263K code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S52.261K
Right
Displaced segmental fracture of shaft of ulna, right arm, subsequent encounter for closed fracture with nonunion
S52.263K
Unspecified
Displaced segmental fracture of shaft of ulna, unspecified arm, subsequent encounter for closed 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. S52.261K and S52.263K 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

S52.261KDisplaced segmental fracture of shaft of ulna, right arm, subsequent encounter for closed fracture with nonunionS52.263KDisplaced segmental fracture of shaft of ulna, unspecified arm, subsequent encounter for closed 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)
DefinitionDisplaced segmental fracture of shaft of ulna, right arm, subsequent encounter for closed fracture with nonunion is a billable ICD-10-CM diagnosis code (S52.261K).Displaced segmental fracture of shaft of ulna, unspecified arm, subsequent encounter for closed fracture with nonunion is a billable ICD-10-CM diagnosis code (S52.263K).
7th characterThe appropriate 7th character is to be added to all codes from category S52The appropriate 7th character is to be added to all codes from category S52

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