ICD-10 Code C13.0 – Malignant neoplasm of postcricoid region (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C13.0 – Malignant neoplasm of postcricoid region
What it is
C13.0 identifies a malignant tumor arising in the postcricoid region, part of the hypopharynx behind the cricoid cartilage. Use this code when documentation states cancer in that specific anatomic site.
Clinical signs
Clinical features may include progressive swallowing difficulty, throat discomfort, voice changes, or unexplained weight loss. Findings depend on tumor extent; clinical features vary, so refer to documentation.
When to use this code
Use C13.0 when the provider documents primary malignancy of the postcricoid region, or clearly identifies cancer in that exact site. It is appropriate for confirmed hypopharyngeal tumors localized to the postcricoid area. If the record only says “throat cancer,” check documentation for the precise anatomic site.
Do not use for
Do not use this code for malignant neoplasms of other hypopharyngeal subsites, larynx, or esophagus. Check documentation when the site is unclear or when the lesion is described only as metastatic disease.
Coding tip
Always verify the exact anatomic location before assigning C13.0.