ICD-10-CM > C00-D49 > C00-C14 > C11 > C11.2 C11.2 Malignant neoplasm of lateral wall of nasopharynx Billable/Specific Copy Code Copy Description Applicable To Malignant neoplasm of fossa of RosenmüllerMalignant neoplasm of opening of auditory tubeMalignant neoplasm of pharyngeal recess