C11.3 – Malignant neoplasm of anterior wall of nasopharynx

ICD-10-CM 2027 diagnosis code · Malignant neoplasms of lip, oral cavity and pharynx

Billable code

ICD-10-CM code C11.3

Code: C11.3 (claims format: C113)
Description: Malignant neoplasm of anterior wall of nasopharynx
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 2. Neoplasms (C00-D49)
Block: C00-C14 Malignant neoplasms of lip, oral cavity and pharynx
Parent codes: C11

Notes for C11.3

Applicable to:

Malignant neoplasm of floor of nasopharynx
Malignant neoplasm of nasopharyngeal (anterior) (posterior) surface of soft palate
Malignant neoplasm of posterior margin of nasal choana
Malignant neoplasm of posterior margin of nasal septum

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

C11 – Malignant neoplasm of nasopharynx

Use additional code:

code to identify:
exposure to environmental tobacco smoke (Z77.22)
exposure to tobacco smoke in the perinatal period (P96.81)
history of tobacco dependence (Z87.891)
occupational exposure to environmental tobacco smoke (Z57.31)
tobacco dependence (F17.-)
tobacco use (Z72.0)

Related codes in C11

Frequently asked questions

What is ICD-10 code C11.3?

C11.3 is the ICD-10-CM code for malignant neoplasm of anterior wall of nasopharynx, in the block C00-C14 (Malignant neoplasms of lip, oral cavity and pharynx).

Is C11.3 a billable code?

Yes. C11.3 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does C11.3 belong to?

It belongs to category C11 – Malignant neoplasm of nasopharynx.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.