ICD-10 Code C32.2 – Malignant neoplasm of subglottis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C32.2 – Malignant neoplasm of subglottis
What it is
C32.2 identifies a malignant tumor arising in the subglottis, the part of the larynx below the vocal cords. Use it when documentation specifies primary cancer in this location.
Clinical signs
Clinical features may include hoarseness, breathing difficulty, cough, or airway obstruction. Diagnosis is usually supported by laryngoscopic examination and pathology; clinical features vary, refer to documentation.
When to use this code
Use C32.2 when the provider documents primary malignant neoplasm of the subglottic larynx. It also fits cases where pathology or operative reports clearly identify the subglottis as the tumor site. If the record is unclear about exact laryngeal subsite, check documentation before assigning the code.
Do not use for
Do not use this code for benign subglottic lesions, dysplasia, or tumors documented in another laryngeal site. If the cancer is secondary or the site is not specified, check documentation.
Coding tip
Confirm the exact laryngeal subsite in the pathology or operative note before coding, because other laryngeal cancers use different ICD-10 codes.