S56.111 (Strain of flexor muscle, fascia and tendon of right index finger at forearm level) compared with S56.112 (Strain of flexor muscle, fascia and tendon of left index finger at forearm level), from the official CMS tabular data. S56.111 and S56.112 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. S56.111 and S56.112 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.
| S56.111Strain of flexor muscle, fascia and tendon of right index finger at forearm level | S56.112Strain of flexor muscle, fascia and tendon of left index finger at forearm level | |
|---|---|---|
| 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 flexor muscle, fascia and tendon of right index finger at forearm level is a non-billable ICD-10-CM category code (S56.111). | Strain of flexor muscle, fascia and tendon of left index finger at forearm level is a non-billable ICD-10-CM category code (S56.112). |
| 7th character | The appropriate 7th character is to be added to each code from category S56 | The appropriate 7th character is to be added to each code from category S56 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources