S62.348A vs S62.348B

S62.348A (Nondisplaced fracture of base of other metacarpal bone, initial encounter for closed fracture) compared with S62.348B (Nondisplaced fracture of base of other metacarpal bone, initial encounter for open fracture), from the official CMS tabular data. S62.348A and S62.348B code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S62.348A

Initial encounter

Nondisplaced fracture of base of other metacarpal bone, initial encounter for closed fracture

↔

S62.348B

Initial encounter

Nondisplaced fracture of base of other metacarpal bone, initial encounter for open fracture

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. S62.348A and S62.348B 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

	S62.348ANondisplaced fracture of base of other metacarpal bone, initial encounter for closed fracture	S62.348BNondisplaced fracture of base of other metacarpal bone, initial encounter for open fracture
Billing status	Billable	Billable
Classification	S00-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)
Definition	Nondisplaced fracture of base of other metacarpal bone, initial encounter for closed fracture is a billable ICD-10-CM diagnosis code (S62.348A).	Nondisplaced fracture of base of other metacarpal bone, initial encounter for open fracture is a billable ICD-10-CM diagnosis code (S62.348B).
7th character	The appropriate 7th character is to be added to each code from category S62	The appropriate 7th character is to be added to each code from category S62
Includes	Nondisplaced fracture of base of specified metacarpal bone with unspecified laterality	Nondisplaced fracture of base of specified metacarpal bone with unspecified laterality

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