S25.312A (Minor laceration of left innominate or subclavian vein, initial encounter) compared with S25.312S (Minor laceration of left innominate or subclavian vein, sequela), from the official CMS tabular data. S25.312A and S25.312S 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. S25.312A and S25.312S 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.
| S25.312AMinor laceration of left innominate or subclavian vein, initial encounter | S25.312SMinor laceration of left innominate or subclavian vein, 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 | Minor laceration of left innominate or subclavian vein, initial encounter is a billable ICD-10-CM diagnosis code (S25.312A). | Minor laceration of left innominate or subclavian vein, sequela is a billable ICD-10-CM diagnosis code (S25.312S). |
| 7th character | The appropriate 7th character is to be added to each code from category S25 | The appropriate 7th character is to be added to each code from category S25 |
| Includes | injuries of breast injuries of chest (wall) injuries of interscapular area | injuries of breast injuries of chest (wall) injuries of interscapular area |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources