C04.0 ICD-10-CM Code: Malignant neoplasm of anterior floor of mouth
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
C04.0Malignant neoplasm of anterior floor of mouth
ICD-10-CM diagnosis code · United States clinical modification
Where C04.0 sits
- 1
Chapter 2
Neoplasms (C00-D49)
- 2
Section
Malignant neoplasms of lip, oral cavity and pharynx (C00-C14)
- 3
Category C04
Malignant neoplasm of floor of mouth
- 4
Code C04.0
Malignant neoplasm of anterior floor of mouth
Notes for this code
Inclusion terms
- Malignant neoplasm of anterior to the premolar-canine junction
Code first
No “code first” instruction is listed for C04.0.
Use additional code
No “use additional code” instruction is listed for C04.0.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for C04.0.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for C04.0.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code C04.0 mean?
C04.0 is the FY 2027 U.S. ICD-10-CM code for “Malignant neoplasm of anterior floor of mouth.”
Is C04.0 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, C04.0 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is C04.0 located in ICD-10-CM?
C04.0 is listed in Chapter 2, Neoplasms (C00-D49), within Malignant neoplasms of lip, oral cavity and pharynx (C00-C14) (C00–C14), under category C04, Malignant neoplasm of floor of mouth.
What coding notes are listed for C04.0?
Its listed inclusion terms are Malignant neoplasm of anterior to the premolar-canine junction. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.