A33 vs A35
A33 (Tetanus neonatorum) compared with A35 (Other tetanus), 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. A35 carries an Excludes1 note covering A33: “tetanus neonatorum (A33)”
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
| A33Tetanus neonatorum | A35Other tetanus | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) |
| Definition | Tetanus neonatorum is a billable ICD-10-CM diagnosis code (A33). | Other tetanus is a billable ICD-10-CM diagnosis code (A35). |
| Includes | — | Tetanus NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources