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S62.313A vs S62.313K

S62.313A (Displaced fracture of base of third metacarpal bone, left hand, initial encounter for closed fracture) compared with S62.313K (Displaced fracture of base of third metacarpal bone, left hand, subsequent encounter for fracture with nonunion), from the official CMS tabular data. S62.313A and S62.313K code the same injury at a different phase of treatment.

Can these codes be reported together?

Same injury, other encounter phase. S62.313A and S62.313K code the same injury at a different phase of treatment, set by the 7th character.

The 7th character records the type of care given at the encounter being coded (ICD-10-CM Official Guidelines, Section I.C.19.a), so one encounter takes one of these, not both.

Side by side

S62.313ADisplaced fracture of base of third metacarpal bone, left hand, initial encounter for closed fractureS62.313KDisplaced fracture of base of third metacarpal bone, left hand, 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)
DefinitionDisplaced fracture of base of third metacarpal bone, left hand, initial encounter for closed fracture is a billable ICD-10-CM diagnosis code (S62.313A).Displaced fracture of base of third metacarpal bone, left hand, subsequent encounter for fracture with nonunion is a billable ICD-10-CM diagnosis code (S62.313K).
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