G56
⚠ Non-billable (Header)Mononeuropathies of upper limb
Diseases of the nervous system (G00-G99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
directThese codes are mutually exclusive. Never code them together.
- • current traumatic nerve disorder - see nerve injury by body region
Child Codes (7)
Clinical Description
ICD-10-CM code G56 represents mononeuropathies of upper limb. This code falls under the Diseases of the nervous system (G00-G99) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
Frequently Asked Questions
What is ICD-10 code G56?
ICD-10-CM code G56 is "Mononeuropathies of upper limb". It belongs to the category: Diseases of the nervous system (G00-G99).
Is G56 a billable ICD-10 code?
No, G56 is a non-billable header code. A more specific child code must be used for billing.
What codes are excluded with G56?
G56 has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)