S80.27 vs S81.05
S80.27 (Other superficial bite of knee) compared with S81.05 (Open bite of knee), 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. S80.27 carries an Excludes1 note covering S81.05: “open bite of knee (S81.05-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. S81.05 carries an Excludes1 note covering S80.27: “superficial bite of knee (S80.27-)”
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
| S80.27Other superficial bite of knee | S81.05Open bite of knee | |
|---|---|---|
| Billing status | Non-billable header Report instead: S80.271A, S80.271D, S80.271S, S80.272A, S80.272D | Non-billable header Report instead: S81.051A, S81.051D, S81.051S, S81.052A, S81.052D |
| 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 knee is a non-billable ICD-10-CM category code (S80.27). | Open bite of knee is a non-billable ICD-10-CM category code (S81.05). |
| 7th character | The appropriate 7th character is to be added to each code from category S80 | The appropriate 7th character is to be added to each code from category S81 |
| Includes | — | Bite of knee NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources