ICD-10 Code D36.13 – Benign neoplasm of peripheral nerves and autonomic nervous system of lower limb, including hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D36.13 – Benign neoplasm of peripheral nerves and autonomic nervous system of lower limb, including hip
What it is
D36.13 identifies a noncancerous tumor arising from peripheral nerves or the autonomic nervous system in the lower limb, including the hip. Use it when documentation clearly states a benign neoplasm at that site.
Clinical signs
Clinical features vary; refer to documentation. These lesions may be noted as a localized mass, nerve-related discomfort, or incidental imaging or pathology finding, but the record should confirm benign behavior and lower-limb location.
When to use this code
Use D36.13 when the provider documents a benign nerve tumor in the leg, foot, thigh, or hip region. It also fits when pathology or imaging confirms a benign neoplasm of peripheral nerves or autonomic nerves at that site.
If the chart only says “mass,” “lesion,” or “tumor” without behavior or anatomic detail, check documentation before coding. Code the documented site and benign nature, not symptoms alone.
Do not use for
Do not use this code for malignant nerve tumors, unspecified neoplasms, or lesions outside the lower limb and hip. Check documentation if the behavior or exact nerve origin is unclear.
Coding tip
Confirm both benign behavior and lower-limb location in the provider note before assigning D36.13.