S89.392A (Other physeal fracture of lower end of left fibula, initial encounter for closed fracture) compared with S89.392S (Other physeal fracture of lower end of left fibula, sequela), from the official CMS tabular data. S89.392A and S89.392S code the same injury at a different phase of treatment.
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
Same injury, other encounter phase. S89.392A and S89.392S 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.
| S89.392AOther physeal fracture of lower end of left fibula, initial encounter for closed fracture | S89.392SOther physeal fracture of lower end of left fibula, sequela | |
|---|---|---|
| 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 | Other physeal fracture of lower end of left fibula, initial encounter for closed fracture is a billable ICD-10-CM diagnosis code (S89.392A). | Other physeal fracture of lower end of left fibula, sequela is a billable ICD-10-CM diagnosis code (S89.392S). |
| 7th character | The appropriate 7th character is to be added to each code from subcategories S89.0, S89.1, S89.2, and S89.3 | The appropriate 7th character is to be added to each code from subcategories S89.0, S89.1, S89.2, and S89.3 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources