2020 ICD-10-CM Diagnosis Code G70.80

Lambert-Eaton syndrome, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • G70.80 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM G70.80 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of G70.80 - other international versions of ICD-10 G70.80 may differ.
Applicable To
  • Lambert-Eaton syndrome NOS
The following code(s) above G70.80 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 G70.80:
  • 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
  • G70
    ICD-10-CM Diagnosis Code G70

    Myasthenia gravis and other myoneural disorders

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Myasthenia gravis and other myoneural disorders
Approximate Synonyms
  • Eaton lambert syndrome
  • Eaton lambert syndrome without underlying malignancy
Clinical Information
  • A rare autoimmune presynaptic disorder characterized by impairment of the impulse transmission at the neuromuscular junction. It affects predominantly the proximal muscles of the lower extremities, resulting in muscle weakness and fatigability. It has been associated with small cell lung carcinoma.
  • An autoimmune disease characterized by weakness and fatigability of proximal muscles, particularly of the pelvic girdle, lower extremities, trunk, and shoulder girdle. There is relative sparing of extraocular and bulbar muscles. Carcinoma, small cell of the lung is a frequently associated condition, although other malignancies and autoimmune diseases may be associated. Muscular weakness results from impaired impulse transmission at the neuromuscular junction. Presynaptic calcium channel dysfunction leads to a reduced amount of acetylcholine being released in response to stimulation of the nerve. (from Adams et al., Principles of Neurology, 6th ed, pp 1471)
ICD-10-CM G70.80 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 056 Degenerative nervous system disorders with mcc
  • 057 Degenerative nervous system disorders without mcc

Convert G70.80 to ICD-9-CM

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
Code annotations containing back-references to G70.80:
  • Type 1 Excludes: G73.1
    ICD-10-CM Diagnosis Code G73.1

    Lambert-Eaton syndrome in neoplastic disease

      2016 2017 2018 2019 2020 Billable/Specific Code Manifestation Code
    Code First
    Type 1 Excludes
    • Lambert-Eaton syndrome not associated with neoplasm (G70.80-G70.81)

Diagnosis Index entries containing back-references to G70.80:

ICD-10-CM Codes Adjacent To G70.80
G65.0 Sequelae of Guillain-Barré syndrome
G65.1 Sequelae of other inflammatory polyneuropathy
G65.2 Sequelae of toxic polyneuropathy
G70 Myasthenia gravis and other myoneural disorders
G70.0 Myasthenia gravis
G70.00 …… without (acute) exacerbation
G70.01 …… with (acute) exacerbation
G70.1 Toxic myoneural disorders
G70.2 Congenital and developmental myasthenia
G70.8 Other specified myoneural disorders
G70.80 Lambert-Eaton syndrome, unspecified
G70.81 Lambert-Eaton syndrome in disease classified elsewhere
G70.89 Other specified myoneural disorders
G70.9 Myoneural disorder, unspecified
G71 Primary disorders of muscles
G71.0 Muscular dystrophy
G71.00 …… unspecified
G71.01 Duchenne or Becker muscular dystrophy
G71.02 Facioscapulohumeral muscular dystrophy
G71.09 Other specified muscular dystrophies
G71.1 Myotonic disorders

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