G70.0

Myasthenia gravis

FY2027Chapter 6: Diseases of the nervous system/G70–G73 Diseases of myoneural junction and muscle

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

G70.0 is a non-billable ICD-10-CM code header for myasthenia gravis. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are G70.00 Myasthenia gravis without (acute) exacerbation and G70.01 Myasthenia gravis with (acute) exacerbation. Its coding notes include 2 Excludes1 entries and 8 Excludes2 entries.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Inherited from G70 Myasthenia gravis and other myoneural disorders

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (8 notes)
Inherited from Chapter 6 Diseases of the nervous system
  • 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)

More specific codes under G70.0 2