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S02.121A vs S02.121G

S02.121A (Fracture of orbital roof, right side, initial encounter for closed fracture) compared with S02.121G (Fracture of orbital roof, right side, subsequent encounter for fracture with delayed healing), from the official CMS tabular data. S02.121A and S02.121G code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S02.121A
Initial encounter
Fracture of orbital roof, right side, initial encounter for closed fracture
↔
S02.121G
Subsequent encounter
Fracture of orbital roof, right side, subsequent encounter for fracture with delayed healing

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. S02.121A and S02.121G 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

S02.121AFracture of orbital roof, right side, initial encounter for closed fractureS02.121GFracture of orbital roof, right side, subsequent encounter for fracture with delayed healing
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 orbital roof, right side, initial encounter for closed fracture is a billable ICD-10-CM diagnosis code (S02.121A).Fracture of orbital roof, right side, subsequent encounter for fracture with delayed healing is a billable ICD-10-CM diagnosis code (S02.121G).
7th characterThe appropriate 7th character is to be added to each code from category S02The appropriate 7th character is to be added to each code from category S02
Includes
injuries of ear
injuries of eye
injuries of face [any part]
injuries of gum
injuries of ear
injuries of eye
injuries of face [any part]
injuries of gum
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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