C11 is a "category code," which means it's non-billable. Billable codes require more specificity. Use the list below to navigate to codes that are more specific:
10
C11.0
Malignant neoplasm of superior wall of nasopharynx
Billable
10
C11.1
Malignant neoplasm of posterior wall of nasopharynx
Billable
10
C11.2
Malignant neoplasm of lateral wall of nasopharynx
Billable
10
C11.3
Malignant neoplasm of anterior wall of nasopharynx
Billable
10
C11.8
Malignant neoplasm of overlapping sites of nasopharynx
Billable
10
C11.9
Malignant neoplasm of nasopharynx, unspecified
Billable