S30.877 vs S31.835
S30.877 (Other superficial bite of anus) compared with S31.835 (Open bite of anus), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. S31.835 carries an Excludes1 note covering S30.877: “superficial bite of anus (S30.877)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| S30.877Other superficial bite of anus | S31.835Open bite of anus | |
|---|---|---|
| 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 | Other superficial bite of anus is a non-billable ICD-10-CM category code (S30.877). | Open bite of anus is a non-billable ICD-10-CM category code (S31.835). |
| 7th character | The appropriate 7th character is to be added to each code from category S30 | The appropriate 7th character is to be added to each code from category S31 |
| Includes | injuries to the abdominal wall injuries to the anus injuries to the buttock injuries to the external genitalia | injuries to the abdominal wall injuries to the anus injuries to the buttock injuries to the external genitalia |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources