S86.911 (Strain of unspecified muscle(s) and tendon(s) at lower leg level, right leg) compared with S86.912 (Strain of unspecified muscle(s) and tendon(s) at lower leg level, left leg), from the official CMS tabular data. S86.911 and S86.912 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. S86.911 and S86.912 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.
| S86.911Strain of unspecified muscle(s) and tendon(s) at lower leg level, right leg | S86.912Strain of unspecified muscle(s) and tendon(s) at lower leg level, left 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 | Strain of unspecified muscle(s) and tendon(s) at lower leg level, right leg is a non-billable ICD-10-CM category code (S86.911). | Strain of unspecified muscle(s) and tendon(s) at lower leg level, left leg is a non-billable ICD-10-CM category code (S86.912). |
| 7th character | The appropriate 7th character is to be added to each code from category S86 | The appropriate 7th character is to be added to each code from category S86 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources