C04 — Malignant neoplasm of floor of mouth
Not billable
Is C04 billable?
No — C04 is a non-billable header code. C04 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 4 billable codes beneath C04.
C04 at a glance
| Code | C04 |
|---|---|
| Description | Malignant neoplasm of floor of mouth |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Use additional code
Report an additional code alongside C04 to fully describe the condition. C04 is sequenced first.
What codes fall under C04? (4)
How long has C04 existed?
C04 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.