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S62.501K vs S62.509K

S62.501K (Fracture of unspecified phalanx of right thumb, subsequent encounter for fracture with nonunion) compared with S62.509K (Fracture of unspecified phalanx of unspecified thumb, subsequent encounter for fracture with nonunion), from the official CMS tabular data. S62.501K and S62.509K code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S62.501K
Right
Fracture of unspecified phalanx of right thumb, subsequent encounter for fracture with nonunion
S62.509K
Unspecified
Fracture of unspecified phalanx of unspecified thumb, 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. S62.501K and S62.509K 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

S62.501KFracture of unspecified phalanx of right thumb, subsequent encounter for fracture with nonunionS62.509KFracture of unspecified phalanx of unspecified thumb, 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)
DefinitionFracture of unspecified phalanx of right thumb, subsequent encounter for fracture with nonunion is a billable ICD-10-CM diagnosis code (S62.501K).Fracture of unspecified phalanx of unspecified thumb, subsequent encounter for fracture with nonunion is a billable ICD-10-CM diagnosis code (S62.509K).
7th characterThe appropriate 7th character is to be added to each code from category S62The appropriate 7th character is to be added to each code from category S62

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