ICD-10 Code C53.0 – Malignant neoplasm of endocervix (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C53.0 – Malignant neoplasm of endocervix
What it is
C53.0 identifies a malignant tumor arising in the endocervix, the canal lining of the cervix. Use it when documentation specifies cancer of the endocervical portion, not the cervix in general.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include abnormal vaginal bleeding, watery or bloody discharge, and an abnormal cervical exam or biopsy confirming malignancy.
When to use this code
Use C53.0 when the provider documents primary cancer of the endocervix or endocervical canal. It also fits pathology, imaging, or operative notes that clearly localize the malignancy to the endocervix. If the site is described only as cervix, check documentation before assigning this code.
Do not use for
Do not use C53.0 for benign cervical lesions, cervical dysplasia, or malignancy stated only as the cervix without endocervical location. Check documentation if the record describes another cervical site.
Coding tip
Code the most specific cervical site documented; if the record is unclear, query for endocervix versus other cervix locations.