ICD-10 Code C32.1 – Malignant neoplasm of supraglottis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C32.1 – Malignant neoplasm of supraglottis
What it is
C32.1 identifies a malignant tumor arising in the supraglottis, the upper part of the larynx above the vocal cords. Use it when the documentation specifies cancer of this anatomic site.
Clinical signs
Typical findings may include persistent hoarseness, throat discomfort, dysphagia, or a neck mass. Clinical features vary; refer to documentation and confirmed site of origin.
When to use this code
Use C32.1 when the provider documents primary malignant neoplasm of the supraglottic larynx, including supraglottic cancer or a tumor centered in that region. Code it from pathology, endoscopy, or imaging documentation when the site is clearly stated.
If the record only says laryngeal cancer without a specific subsite, check documentation before assigning a more specific code. Confirm whether the lesion is primary, recurrent, or metastatic to avoid miscoding.
Do not use for
Do not use this code for malignant neoplasm of the glottis, subglottis, or other laryngeal sites. Do not use it for benign, in situ, or metastatic disease unless the documentation specifically supports C32.1.
Coding tip
Code the exact laryngeal subsite only when the provider documents it clearly; otherwise, query for clarification.