ICD-10 Code C32.8 – Malignant neoplasm of overlapping sites of larynx (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C32.8 – Malignant neoplasm of overlapping sites of larynx
What it is
This code identifies a malignant tumor of the larynx that spans more than one anatomic site and cannot be assigned to a single laryngeal subsite. Use it when the record clearly states overlapping involvement.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include hoarseness, throat discomfort, dysphagia, or airway symptoms, but the site overlap must be documented or supported by the diagnostic report.
When to use this code
Use C32.8 when the provider documents cancer of the larynx involving overlapping regions, such as crossing boundaries between laryngeal subsites. It is appropriate when the tumor cannot be coded more specifically to glottis, supraglottis, or subglottis. If the site is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for a laryngeal malignancy confined to one subsite or for benign laryngeal lesions. Do not assume overlap without explicit documentation or a report supporting multi-site involvement.
Coding tip
Verify the pathology, operative note, or oncology documentation for exact laryngeal site description before coding C32.8.