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S62.351A vs S62.351K

S62.351A (Nondisplaced fracture of shaft of second metacarpal bone, left hand, initial encounter for closed fracture) compared with S62.351K (Nondisplaced fracture of shaft of second metacarpal bone, left hand, subsequent encounter for fracture with nonunion), from the official CMS tabular data. S62.351A and S62.351K code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S62.351A
Initial encounter
Nondisplaced fracture of shaft of second metacarpal bone, left hand, initial encounter for closed fracture
S62.351K
Subsequent encounter
Nondisplaced fracture of shaft of second metacarpal bone, left hand, subsequent encounter for fracture with nonunion

Same underlying diagnosis, different encounter phase.

The 7th character records the phase of care for the encounter being coded, so a single encounter takes one of these characters, not several. Review whether both phases belong on the same episode of care.

Source: ICD-10-CM Official Guidelines, Section I.C.19.a

Can these codes be reported together?

Same injury, other encounter phase. S62.351A and S62.351K 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

S62.351ANondisplaced fracture of shaft of second metacarpal bone, left hand, initial encounter for closed fractureS62.351KNondisplaced fracture of shaft of second 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)
DefinitionNondisplaced fracture of shaft of second metacarpal bone, left hand, initial encounter for closed fracture is a billable ICD-10-CM diagnosis code (S62.351A).Nondisplaced fracture of shaft of second metacarpal bone, left hand, subsequent encounter for fracture with nonunion is a billable ICD-10-CM diagnosis code (S62.351K).
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