S88.121 (Partial traumatic amputation at level between knee and ankle, right lower leg) compared with S88.122 (Partial traumatic amputation at level between knee and ankle, left lower leg), from the official CMS tabular data. S88.121 and S88.122 code the same condition on opposite sides.
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. S88.121 and S88.122 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.
| S88.121Partial traumatic amputation at level between knee and ankle, right lower leg | S88.122Partial traumatic amputation at level between knee and ankle, left lower leg | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| 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 | Partial traumatic amputation at level between knee and ankle, right lower leg is a non-billable ICD-10-CM category code (S88.121). | Partial traumatic amputation at level between knee and ankle, left lower leg is a non-billable ICD-10-CM category code (S88.122). |
| 7th character | The appropriate 7th character is to be added to each code from category S88 | The appropriate 7th character is to be added to each code from category S88 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources