ICD-10 Code C75 – Malignant neoplasm of other endocrine glands and related structures (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C75 – Malignant neoplasm of other endocrine glands and related structures
What it is
C75 identifies a malignant tumor arising in endocrine glands or closely related structures not classified elsewhere. Use it when the record names an endocrine-site cancer that is not assigned a more specific code.
Clinical signs
Clinical features vary; refer to documentation. Records may describe a mass, local invasion, or endocrine-related findings, but the diagnosis should be supported by pathology, imaging, or specialist assessment.
When to use this code
Use C75 when the provider documents a malignant neoplasm of an endocrine gland or related structure and no more specific ICD-10-CM code applies. It is appropriate for unspecified or broadly described endocrine-site cancers in the chart. Check for a site-specific code first.
Do not use for
Do not use this code for benign endocrine tumors, uncertain behavior, or metastatic disease to an endocrine gland. If the documentation names a different primary site, code that primary malignancy instead.
Coding tip
Always code the most specific endocrine site documented; if the site is unclear, use C75 only after confirming the record does not support a more specific code.