G56 — Mononeuropathies of upper limb
Is G56 billable?
No — G56 is a non-billable header code. G56 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 28 billable codes beneath G56.
Billable codes under this header
- G56.00Carpal tunnel syndrome, unspecified upper limb
- G56.01Carpal tunnel syndrome, right upper limb
- G56.02Carpal tunnel syndrome, left upper limb
- G56.03Carpal tunnel syndrome, bilateral upper limbs
- G56.10Other lesions of median nerve, unspecified upper limb
- G56.11Other lesions of median nerve, right upper limb
- G56.12Other lesions of median nerve, left upper limb
- G56.13Other lesions of median nerve, bilateral upper limbs
- G56.20Lesion of ulnar nerve, unspecified upper limb
- G56.21Lesion of ulnar nerve, right upper limb
- G56.22Lesion of ulnar nerve, left upper limb
- G56.23Lesion of ulnar nerve, bilateral upper limbs
- G56.30Lesion of radial nerve, unspecified upper limb
- G56.31Lesion of radial nerve, right upper limb
- G56.32Lesion of radial nerve, left upper limb
- G56.33Lesion of radial nerve, bilateral upper limbs
- G56.40Causalgia of unspecified upper limb
- G56.41Causalgia of right upper limb
- G56.42Causalgia of left upper limb
- G56.43Causalgia of bilateral upper limbs
- G56.80Other specified mononeuropathies of unspecified upper limb
- G56.81Other specified mononeuropathies of right upper limb
- G56.82Other specified mononeuropathies of left upper limb
- G56.83Other specified mononeuropathies of bilateral upper limbs
- G56.90Unspecified mononeuropathy of unspecified upper limb
- G56.91Unspecified mononeuropathy of right upper limb
- G56.92Unspecified mononeuropathy of left upper limb
- G56.93Unspecified mononeuropathy of bilateral upper limbs
G56 at a glance
| Code | G56 |
|---|---|
| Description | Mononeuropathies of upper limb |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with G56 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- current traumatic nerve disorder - see nerve injury by body region
Excludes1 — never code together — inherited from G50-G59
The conditions below can never be reported together with G56 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 6
The conditions below are not part of G56, but a patient may have both at the same time. When documentation supports it, G56 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
What codes fall under G56? (7)
- G56.0Carpal tunnel syndromenot billable
- G56.1Other lesions of median nervenot billable
- G56.2Lesion of ulnar nervenot billable
- G56.3Lesion of radial nervenot billable
- G56.4Causalgia of upper limbnot billable
- G56.8Other specified mononeuropathies of upper limbnot billable
- G56.9Unspecified mononeuropathy of upper limbnot billable
How long has G56 existed?
G56 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with G56?
ICD-10-CM declares these codes mutually exclusive with G56 — exactly one of each pair can be correct for a given encounter.