ICD-10 Code C54.8 – Malignant neoplasm of overlapping sites of corpus uteri (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C54.8 – Malignant neoplasm of overlapping sites of corpus uteri
What it is
C54.8 identifies a malignant tumor of the uterine corpus that involves overlapping sites, meaning the cancer spans more than one adjacent area and cannot be assigned to a single subsite.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the record describes a confirmed uterine body malignancy with involvement of multiple contiguous sites or an ill-defined primary location.
When to use this code
Use C54.8 when the provider documents a primary malignant neoplasm of the corpus uteri and specifies overlapping sites. This is appropriate when pathology, imaging, or operative findings show the tumor crosses uterine body subsites. If the site is described more precisely, code that specific location instead.
Do not use for
Do not use this code for benign uterine masses, endometrial hyperplasia, or malignancies confined to a single, clearly documented uterine subsite. Check documentation if the primary site is uncertain.
Coding tip
Verify that “overlapping sites” is explicitly documented; otherwise, select the more specific corpus uteri code supported by the record.