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S52.311A vs S52.311D

S52.311A (Greenstick fracture of shaft of radius, right arm, initial encounter for closed fracture) compared with S52.311D (Greenstick fracture of shaft of radius, right arm, subsequent encounter for fracture with routine healing), from the official CMS tabular data. S52.311A and S52.311D code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S52.311A
Initial encounter
Greenstick fracture of shaft of radius, right arm, initial encounter for closed fracture
S52.311D
Subsequent encounter
Greenstick fracture of shaft of radius, right arm, subsequent encounter for fracture with routine 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. S52.311A and S52.311D 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

S52.311AGreenstick fracture of shaft of radius, right arm, initial encounter for closed fractureS52.311DGreenstick fracture of shaft of radius, right arm, subsequent encounter for fracture with routine 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)
DefinitionGreenstick fracture of shaft of radius, right arm, initial encounter for closed fracture is a billable ICD-10-CM diagnosis code (S52.311A).Greenstick fracture of shaft of radius, right arm, subsequent encounter for fracture with routine healing is a billable ICD-10-CM diagnosis code (S52.311D).
7th characterThe appropriate 7th character is to be added to all codes in subcategory S52.31The appropriate 7th character is to be added to all codes in subcategory S52.31

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