ICD-10-CM · Chapter 6 · G00-G99
G56 Mononeuropathies of upper limb
Excludes 1 (cannot be coded together)
- current traumatic nerve disorder - see nerve injury by body region
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| G56..0 | Carpal tunnel syndrome | No |
| G56..00 | Carpal tunnel syndrome, unspecified upper limb | Yes |
| G56..01 | Carpal tunnel syndrome, right upper limb | Yes |
| G56..02 | Carpal tunnel syndrome, left upper limb | Yes |
| G56..03 | Carpal tunnel syndrome, bilateral upper limbs | Yes |
| G56..1 | Other lesions of median nerve | No |
| G56..10 | Other lesions of median nerve, unspecified upper limb | Yes |
| G56..11 | Other lesions of median nerve, right upper limb | Yes |
| G56..12 | Other lesions of median nerve, left upper limb | Yes |
| G56..13 | Other lesions of median nerve, bilateral upper limbs | Yes |
| G56..2 | Lesion of ulnar nerve | No |
| G56..20 | Lesion of ulnar nerve, unspecified upper limb | Yes |
| G56..21 | Lesion of ulnar nerve, right upper limb | Yes |
| G56..22 | Lesion of ulnar nerve, left upper limb | Yes |
| G56..23 | Lesion of ulnar nerve, bilateral upper limbs | Yes |
| G56..3 | Lesion of radial nerve | No |
| G56..30 | Lesion of radial nerve, unspecified upper limb | Yes |
| G56..31 | Lesion of radial nerve, right upper limb | Yes |
| G56..32 | Lesion of radial nerve, left upper limb | Yes |
| G56..33 | Lesion of radial nerve, bilateral upper limbs | Yes |
| G56..4 | Causalgia of upper limb | No |
| G56..40 | Causalgia of unspecified upper limb | Yes |
| G56..41 | Causalgia of right upper limb | Yes |
| G56..42 | Causalgia of left upper limb | Yes |
| G56..43 | Causalgia of bilateral upper limbs | Yes |
| G56..8 | Other specified mononeuropathies of upper limb | No |
| G56..80 | Other specified mononeuropathies of unspecified upper limb | Yes |
| G56..81 | Other specified mononeuropathies of right upper limb | Yes |
| G56..82 | Other specified mononeuropathies of left upper limb | Yes |
| G56..83 | Other specified mononeuropathies of bilateral upper limbs | Yes |
| G56..9 | Unspecified mononeuropathy of upper limb | No |
| G56..90 | Unspecified mononeuropathy of unspecified upper limb | Yes |
| G56..91 | Unspecified mononeuropathy of right upper limb | Yes |
| G56..92 | Unspecified mononeuropathy of left upper limb | Yes |
| G56..93 | Unspecified mononeuropathy of bilateral upper limbs | Yes |
Plain-language term for this code
The following entry in the US Medical Glossary corresponds to ICD-10-CM category G56:
- Carpal Tunnel Syndrome — Síndrome del Túnel Carpiano
Last reviewed: September 2026