S50.36 vs S51.05
S50.36 (Insect bite (nonvenomous) of elbow) compared with S51.05 (Open bite of elbow), 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. S51.05 carries an Excludes1 note covering S50.36: “superficial bite of elbow (S50.36, S50.37)”
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
| S50.36Insect bite (nonvenomous) of elbow | S51.05Open bite of elbow | |
|---|---|---|
| Billing status | Non-billable header Report instead: S50.361A, S50.361D, S50.361S, S50.362A, S50.362D | Non-billable header Report instead: S51.051A, S51.051D, S51.051S, S51.052A, S51.052D |
| 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 | Insect bite (nonvenomous) of elbow is a non-billable ICD-10-CM category code (S50.36). | Open bite of elbow is a non-billable ICD-10-CM category code (S51.05). |
| 7th character | The appropriate 7th character is to be added to each code from category S50 | The appropriate 7th character is to be added to each code from category S51 |
| Includes | — | Bite of elbow NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources