ICD-10-CM category
G56: Mononeuropathies of upper limb
Codes under G56 (Mononeuropathies of upper limb). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| G56.0 | Carpal tunnel syndrome | — |
| G56.00 | Carpal tunnel syndrome, unspecified upper limb | ✓ |
| G56.01 | Carpal tunnel syndrome, right upper limb | ✓ |
| G56.1 | Other lesions of median nerve | — |
| G56.02 | Carpal tunnel syndrome, left upper limb | ✓ |
| G56.2 | Lesion of ulnar nerve | — |
| G56.03 | Carpal tunnel syndrome, bilateral upper limbs | ✓ |
| G56.3 | Lesion of radial nerve | — |
| G56.4 | Causalgia of upper limb | — |
| G56.8 | Other specified mononeuropathies of upper limb | — |
| G56.9 | Unspecified mononeuropathy of upper limb | — |
| G56.10 | Other lesions of median nerve, unspecified upper limb | ✓ |
| G56.11 | Other lesions of median nerve, right upper limb | ✓ |
| G56.12 | Other lesions of median nerve, left upper limb | ✓ |
| G56.13 | Other lesions of median nerve, bilateral upper limbs | ✓ |
| G56.20 | Lesion of ulnar nerve, unspecified upper limb | ✓ |
| G56.21 | Lesion of ulnar nerve, right upper limb | ✓ |
| G56.22 | Lesion of ulnar nerve, left upper limb | ✓ |
| G56.23 | Lesion of ulnar nerve, bilateral upper limbs | ✓ |
| G56.30 | Lesion of radial nerve, unspecified upper limb | ✓ |
| G56.31 | Lesion of radial nerve, right upper limb | ✓ |
| G56.32 | Lesion of radial nerve, left upper limb | ✓ |
| G56.33 | Lesion of radial nerve, bilateral upper limbs | ✓ |
| G56.40 | Causalgia of unspecified upper limb | ✓ |
| G56.41 | Causalgia of right upper limb | ✓ |
| G56.42 | Causalgia of left upper limb | ✓ |
| G56.43 | Causalgia of bilateral upper limbs | ✓ |
| G56.80 | Other specified mononeuropathies of unspecified upper limb | ✓ |
| G56.81 | Other specified mononeuropathies of right upper limb | ✓ |
| G56.82 | Other specified mononeuropathies of left upper limb | ✓ |
| G56.83 | Other specified mononeuropathies of bilateral upper limbs | ✓ |
| G56.90 | Unspecified mononeuropathy of unspecified upper limb | ✓ |
| G56.91 | Unspecified mononeuropathy of right upper limb | ✓ |
| G56.92 | Unspecified mononeuropathy of left upper limb | ✓ |
| G56.93 | Unspecified mononeuropathy of bilateral upper limbs | ✓ |
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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