S91.155 (Open bite of left lesser toe(s) without damage to nail) compared with S91.156 (Open bite of unspecified lesser toe(s) without damage to nail), from the official CMS tabular data. S91.155 and S91.156 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. S91.155 and S91.156 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.
| S91.155Open bite of left lesser toe(s) without damage to nail | S91.156Open bite of unspecified lesser toe(s) without damage to nail | |
|---|---|---|
| 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 | Open bite of left lesser toe(s) without damage to nail is a non-billable ICD-10-CM category code (S91.155). | Open bite of unspecified lesser toe(s) without damage to nail is a non-billable ICD-10-CM category code (S91.156). |
| 7th character | The appropriate 7th character is to be added to each code from category S91 | The appropriate 7th character is to be added to each code from category S91 |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources