Malignant neoplasm of pharynx, unspecified

This code signifies a cancerous tumor originating in the pharynx, the part of the throat behind the mouth and nasal cavity, extending down to the larynx. It indicates that the specific subsite within the pharynx (e.g., nasopharynx, oropharynx, hypopharynx) has not been identified or documented.

Use this code when the medical record clearly states a malignant neoplasm of the pharynx but lacks further specificity regarding the exact anatomical location within the pharynx. This is appropriate when the physician's documentation only specifies "pharyngeal cancer" without additional detail.

• Avoid using this code if the documentation specifies a particular subsite of the pharynx (e.g., nasopharynx, oropharynx, hypopharynx); instead, select a more specific code from the C11-C13 range.
• Always query the provider for greater specificity if the documentation is unclear, as more precise coding impacts data analysis and potentially reimbursement.
• Remember to also code any associated metastatic sites or primary sites if the pharyngeal cancer is secondary.