S93.491 (Sprain of other ligament of right ankle) compared with S93.499 (Sprain of other ligament of unspecified ankle), from the official CMS tabular data. S93.491 and S93.499 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. S93.491 and S93.499 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.
| S93.491Sprain of other ligament of right ankle | S93.499Sprain of other ligament of unspecified ankle | |
|---|---|---|
| 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 | Sprain of other ligament of right ankle is a non-billable ICD-10-CM category code (S93.491). | Sprain of other ligament of unspecified ankle is a non-billable ICD-10-CM category code (S93.499). |
| 7th character | The appropriate 7th character is to be added to each code from category S93 | The appropriate 7th character is to be added to each code from category S93 |
| Includes | avulsion of joint or ligament of ankle, foot and toe laceration of cartilage, joint or ligament of ankle, foot and toe sprain of cartilage, joint or ligament of ankle, foot and toe traumatic hemarthrosis of joint or ligament of ankle, foot and toe | avulsion of joint or ligament of ankle, foot and toe laceration of cartilage, joint or ligament of ankle, foot and toe sprain of cartilage, joint or ligament of ankle, foot and toe traumatic hemarthrosis of joint or ligament of ankle, foot and toe |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources