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S92.591A vs S92.591P

S92.591A (Other fracture of right lesser toe(s), initial encounter for closed fracture) compared with S92.591P (Other fracture of right lesser toe(s), subsequent encounter for fracture with malunion), from the official CMS tabular data. S92.591A and S92.591P code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S92.591A
Initial encounter
Other fracture of right lesser toe(s), initial encounter for closed fracture
↔
S92.591P
Subsequent encounter
Other fracture of right lesser toe(s), subsequent encounter for fracture with malunion

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. S92.591A and S92.591P 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

S92.591AOther fracture of right lesser toe(s), initial encounter for closed fractureS92.591POther fracture of right lesser toe(s), subsequent encounter for fracture with malunion
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)
DefinitionOther fracture of right lesser toe(s), initial encounter for closed fracture is a billable ICD-10-CM diagnosis code (S92.591A).Other fracture of right lesser toe(s), subsequent encounter for fracture with malunion is a billable ICD-10-CM diagnosis code (S92.591P).
7th characterThe appropriate 7th character is to be added to each code from category S92The appropriate 7th character is to be added to each code from category S92
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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