ICD-10 Code D36.11 – Benign neoplasm of peripheral nerves and autonomic nervous system of face, head, and neck (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D36.11 – Benign neoplasm of peripheral nerves and autonomic nervous system of face, head, and neck
What it is
This code identifies a noncancerous growth arising from peripheral nerves or autonomic nerves in the face, head, or neck. It indicates a benign neoplasm in that anatomic region, not a malignant tumor.
Clinical signs
Clinical features vary; refer to documentation. Patients may have a localized mass, swelling, or symptoms from nerve compression, but the diagnosis should be supported by provider assessment, imaging, pathology, or operative findings.
When to use this code
Use D36.11 when the record documents a benign neoplasm of peripheral or autonomic nerves affecting the face, head, or neck. Apply it after a confirmed diagnosis, such as biopsy, excision, or specialist evaluation, when the location is clearly stated.
Choose this code for benign nerve tumors in this region even if the note describes a mass or lesion rather than naming the tumor type. Check documentation if the site is unclear or if malignancy is not ruled out.
Do not use for
Do not use this code for malignant neoplasms, unspecified tumors, or lesions outside the face, head, and neck. If the documentation does not confirm benign behavior or the exact site, check documentation.
Coding tip
Confirm both benign behavior and anatomic site in the provider record before assigning D36.11.