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ICD-10-CM 2027

ICD-10 code for radial nerve paralysis

G56.3

Lesion of radial nerve

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Paralysis, paralytic (complete) (incomplete) › radial nerve”. Page updated September 29, 2026.

About coding radial nerve paralysis

The ICD-10-CM code for radial nerve paralysis is G56.3 (Lesion of radial nerve).

Within G56 (mononeuropathies of upper limb), G56.3 is specifically for lesion of radial nerve. Related codes cover carpal tunnel syndrome (G56.0), other lesions of median nerve (G56.1), lesion of ulnar nerve (G56.2), Causalgia of upper limb (G56.4), other specified mononeuropathies of upper limb (G56.8) and unspecified mononeuropathy of upper limb (G56.9).

To report this condition, pick the subcode that matches the documentation: G56.30 (unspecified upper limb), G56.31 (right upper limb), G56.32 (left upper limb) and G56.33 (bilateral upper limbs).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about radial nerve paralysis ICD-10 codes

What is the ICD-10 code for radial nerve paralysis?

G56.3 — Lesion of radial nerve (a header code; report a more specific subcode).

Is G56.3 billable?

No. G56.3 is a header code. Report one of its more specific subcodes instead.