Benign neoplasm of hypopharynx

This code signifies the presence of a non-cancerous tumor originating in the hypopharynx, the lowest part of the pharynx. These benign growths are typically slow-growing and do not metastasize, though they can cause symptoms due to their size or location.

Apply this code when documentation clearly identifies a benign neoplasm (e.g., papilloma, fibroma, lipoma) located specifically within the hypopharynx. This diagnosis is often established through endoscopy with biopsy confirming benign histology.

• Ensure the pathology report explicitly states "benign" and specifies the hypopharynx as the anatomical site.
• Distinguish carefully from malignant neoplasms of the hypopharynx (C13.-) or neoplasms of uncertain/unknown behavior (D37.0).
• Do not use for inflammatory polyps or other non-neoplastic lesions; these have distinct coding.