C03: Malignant neoplasm of gum
Codes under C03 (Malignant neoplasm of gum). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| C03.0 | Malignant neoplasm of upper gum | ✓ |
| C03.0 | Malignant neoplasm of upper gum | ✓ |
| C03.1 | Malignant neoplasm of lower gum | ✓ |
| C03.1 | Malignant neoplasm of lower gum | ✓ |
| C03.9 | Malignant neoplasm of gum, unspecified | ✓ |
| C03.9 | Malignant neoplasm of gum, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code C03?
C03 is an ICD-10-CM category covering Malignant neoplasm of gum. It contains 6 more specific diagnosis codes, 6 of which are billable.
Is C03 a billable code?
No — C03 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example C03.0 — Malignant neoplasm of upper gum). 6 of the 6 codes under C03 are billable.
What codes fall under C03?
C03 includes C03.0, C03.0, C03.1, C03.1, C03.9, plus 1 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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