2020 ICD-10-CM Diagnosis Code G56.2

Lesion of ulnar nerve

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • G56.2 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM G56.2 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of G56.2 - other international versions of ICD-10 G56.2 may differ.
Applicable To
  • Tardy ulnar nerve palsy
The following code(s) above G56.2 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to G56.2:
  • G00-G99
    2020 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 2 Excludes
    • 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)
    Diseases of the nervous system
  • G50-G59
    2020 ICD-10-CM Range G50-G59

    Nerve, nerve root and plexus disorders

    Type 1 Excludes
    • current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
    • neuralgia NOS (M79.2)
    • neuritis NOS (M79.2)
    • peripheral neuritis in pregnancy (O26.82-)
    • radiculitis NOS (M54.1-)
    Nerve, nerve root and plexus disorders
  • G56
    ICD-10-CM Diagnosis Code G56

    Mononeuropathies of upper limb

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • current traumatic nerve disorder - see nerve injury by body region
    Mononeuropathies of upper limb
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to G56.2:
  • Lesion(s) (nontraumatic)
    • nerve G58.9
      ICD-10-CM Diagnosis Code G58.9

      Mononeuropathy, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • ulnar G56.2-
  • Mononeuritis G58.9
    ICD-10-CM Diagnosis Code G58.9

    Mononeuropathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • ulnar nerve G56.2-
  • Neuropathy, neuropathic G62.9
    ICD-10-CM Diagnosis Code G62.9

    Polyneuropathy, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Neuropathy NOS
    • entrapment G58.9
      ICD-10-CM Diagnosis Code G58.9

      Mononeuropathy, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code
      • ulnar nerve G56.2-
    • ulnar nerve G56.2-
  • Palsy G83.9
    - see also Paralysis
    ICD-10-CM Diagnosis Code G83.9

    Paralytic syndrome, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • ulnar nerve G56.2- (tardy)
  • Paralysis, paralytic (complete) (incomplete) G83.9
    ICD-10-CM Diagnosis Code G83.9

    Paralytic syndrome, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code

ICD-10-CM Codes Adjacent To G56.2
G56.0 Carpal tunnel syndrome
G56.00 …… unspecified upper limb
G56.01 …… right upper limb
G56.02 …… left upper limb
G56.03 …… bilateral upper limbs
G56.1 Other lesions of median nerve
G56.10 …… unspecified upper limb
G56.11 …… right upper limb
G56.12 …… left upper limb
G56.13 …… bilateral upper limbs
G56.2 Lesion of ulnar nerve
G56.20 …… unspecified upper limb
G56.21 …… right upper limb
G56.22 …… left upper limb
G56.23 …… bilateral upper limbs
G56.3 Lesion of radial nerve
G56.30 …… unspecified upper limb
G56.31 …… right upper limb
G56.32 …… left upper limb
G56.33 …… bilateral upper limbs
G56.4 Causalgia of upper limb

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.