Myasthenia Gravis ICD 10 Code Update

Ned Barrett
June 20, 2025
ICD 10 Codes

2025 ICD-10-CM Diagnosis Code G70.00

Myasthenia gravis without (acute) exacerbation

G70.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

The 2025 edition of ICD-10-CM G70.00 became effective on October 1, 2024.

This is the American ICD-10-CM version of G70.00 – other international versions of ICD-10 G70.00 may differ.

Applicable To Myasthenia gravis NOS

The following code(s) above G70.00 contain annotation back-references

that may be applicable to G70.00:

G00-G99 Diseases of the nervous system

G70 Myasthenia gravis and other myoneural disorders

Approximate Synonyms

Myasthenia gravis
Myasthenia gravis without exacerbation
Myasthenia gravis, ocular
Ocular myasthenia

Clinical Information

Myasthenia Gravis is a chronic autoimmune neuromuscular disorder characterized by skeletal muscle weakness. It is caused by the blockage of the acetylcholine receptors at the neuromuscular junction.
Myasthenia Gravis is a disease in which antibodies made by a person’s immune system prevent certain nerve-muscle interactions. It causes weakness in the arms and legs, vision problems, and drooping eyelids or head. It may also cause paralysis and problems with swallowing, talking, climbing stairs, lifting things, and getting up from a sitting position. The muscle weakness gets worse during activity, and improves after periods of rest.
Myasthenia Gravis is a disorder of neuromuscular transmission characterized by weakness of cranial and skeletal muscles. Autoantibodies directed against acetylcholine receptors damage the motor endplate portion of the neuromuscular junction, impairing the transmission of impulses to skeletal muscles. Clinical manifestations may include diplopia, ptosis, and weakness of facial, bulbar, respiratory, and proximal limb muscles. The disease may remain limited to the ocular muscles. Thymoma is commonly associated with this condition. (Adams et al., Principles of Neurology, 6th ed, p1459)
Myasthenia Gravis is a disease characterized by progressive weakness and exhaustibility of voluntary muscles without atrophy or sensory disturbance and caused by an autoimmune attack on acetylcholine receptors at the neuromuscular junction.
Myasthenia gravis is disease that causes weakness in the muscles under your control. It happens because of a problem in communication between your nerves and muscles. Myasthenia gravis is an autoimmune disease. Your body’s own immune system makes antibodies that block or change some of the nerve signals to your muscles. This makes your muscles weaker.common symptoms are trouble with eye and eyelid movement, facial expression and swallowing. But it can also affect other muscles. The weakness gets worse with activity, and better with rest..there are medicines to help improve nerve-to-muscle messages and make muscles stronger. With treatment, the muscle weakness often gets much better. Other drugs keep your body from making so many abnormal antibodies. There are also treatments which filter abnormal antibodies from the blood or add healthy antibodies from donated blood. Sometimes surgery to take out the thymus gland helps.for some people, myasthenia gravis can go into remission and they do not need medicines. The remission can be temporary or permanent.if you have myasthenia gravis, it is important to follow your treatment plan. If you do, you can expect your life to be normal or close to it.

ICD-10-CM G70.00 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

056 Degenerative nervous system disorders with mcc

057 Degenerative nervous system disorders without mcc

Convert G70.00 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
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change
2024 (effective 10/1/2023): No change
2025 (effective 10/1/2024): No change

Diagnosis Index entries containing back-references to G70.00:

Erb-Goldflam disease or syndrome G70.00
Goldflam-Erb disease or syndrome G70.00
Myasthenia G70.9

gravis G70.00

pseudoparalytica G70.00

Paralysis, paralytic (complete) (incomplete) G83.9

asthenic bulbar G70.00

bulbospinal G70.00

Syndrome – see also Disease

Hoppe-Goldflam G70.00

pseudoparalytica G70.00

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

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