Skip to main content

S99.299A vs S99.299G

S99.299A (Other physeal fracture of phalanx of unspecified toe, initial encounter for closed fracture) compared with S99.299G (Other physeal fracture of phalanx of unspecified toe, subsequent encounter for fracture with delayed healing), from the official CMS tabular data. S99.299A and S99.299G code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S99.299A
Initial encounter
Other physeal fracture of phalanx of unspecified toe, initial encounter for closed fracture
S99.299G
Subsequent encounter
Other physeal fracture of phalanx of unspecified toe, 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. S99.299A and S99.299G 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

S99.299AOther physeal fracture of phalanx of unspecified toe, initial encounter for closed fractureS99.299GOther physeal fracture of phalanx of unspecified toe, subsequent encounter for fracture with delayed healing
Billing statusBillableBillable
ClassificationS00-T88 — Injury, poisoning and certain other consequences of external causesS00-T88 — Injury, poisoning and certain other consequences of external causes
DefinitionOther physeal fracture of phalanx of unspecified toe, initial encounter for closed fracture is a billable ICD-10-CM diagnosis code (S99.299A).Other physeal fracture of phalanx of unspecified toe, subsequent encounter for fracture with delayed healing is a billable ICD-10-CM diagnosis code (S99.299G).
7th characterThe appropriate 7th character is to be added to each code from subcategories S99.2The appropriate 7th character is to be added to each code from subcategories S99.2

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