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G70.00

G70.00: Myasthenia gravis without (acute) exacerbation

Billable / specific codeICD-10-CM

G70.00 is a billable, specific ICD-10-CM code for myasthenia gravis without (acute) exacerbation. It is valid for submission on a claim.

Check G70.00 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Myasthenia gravis NOS

Excludes1 inherited from the categories above G70.00

A category’s note binds every code beneath it.

Written on G70: Myasthenia gravis and other myoneural disorders

Risk adjustment

G70.00 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 196 Myasthenia Gravis without (Acute) Exacerbation and Other Myoneural Disorders0.516 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

G70.00 is named in 31 Medicare coverage policies: 31 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52494High Frequency Chest Wall Oscillation Devices - Policy Article
  • A52510Mechanical In-exsufflation Devices - Policy Article
  • A54095Billing and Coding: Nerve Conduction Studies and Electromyography
  • A54548Billing and Coding: Eculizumab, and Biosimilars: EPYSQLI®-eculizumab-aagh, and BKEMV™-eculizumab-aeeb

Alphabetic index entries that lead here

  • Erb-Goldflam disease or syndrome
  • Goldflam-Erb disease or syndrome
  • Myasthenia›gravis
  • Paralysis, paralytic›asthenic bulbar
  • Paralysis, paralytic›bulbospinal
  • Syndrome›Hoppe-Goldflam
  • Syndrome›pseudoparalytica
  • Myasthenia›gravis›pseudoparalytica

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under G70.0

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.