S21.122A vs S21.129A
S21.122A (Laceration with foreign body of left front wall of thorax without penetration into thoracic cavity, initial encounter) compared with S21.129A (Laceration with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, initial encounter), from the official CMS tabular data. S21.122A and S21.129A code the same condition on opposite sides.
Can these codes be reported together?
Same condition, opposite side. S21.122A and S21.129A name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
Side by side
| S21.122ALaceration with foreign body of left front wall of thorax without penetration into thoracic cavity, initial encounter | S21.129ALaceration with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, initial encounter | |
|---|---|---|
| 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 | Laceration with foreign body of left front wall of thorax without penetration into thoracic cavity, initial encounter is a billable ICD-10-CM diagnosis code (S21.122A). | Laceration with foreign body of unspecified front wall of thorax without penetration into thoracic cavity, initial encounter is a billable ICD-10-CM diagnosis code (S21.129A). |
| 7th character | The appropriate 7th character is to be added to each code from category S21 | The appropriate 7th character is to be added to each code from category S21 |
| 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