G70.00 Myasthenia gravis without (acute) exacerbation

Billable ICD-10-CM code, FY2026.

Applicable to

• Myasthenia gravis NOS

Applies from G70 Myasthenia gravis and other myoneural disorders

Excludes1 (never code together)

• botulism (A05.1, A48.51-A48.52)
• transient neonatal myasthenia gravis (P94.0)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 196 — Myasthenia Gravis without (Acute) Exacerbation and Other Myoneural Disorders
• CMS-HCC V22: HCC 75 — Myasthenia Gravis/Myoneural Disorders, Inflammatory and Toxic Neuropathy
• RxHCC V08: HCC 153 — Myasthenia Gravis and Other Myoneural Disorders
• ESRD V24: HCC 75

MS-DRG index

Defines the logic of DRG(s) 056-057 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 358.00 Myasthenia gravis without (acute) exacerbation

Code annotations containing back-references to G70.00

Back-references to G70.0

• Type 1 Excludes: E32 Diseases of thymus ("myasthenia gravis (G70.0)")
• Type 1 Excludes: P94.0 Transient neonatal myasthenia gravis ("myasthenia gravis (G70.0)")

Diagnosis Index entries for G70.00

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

Nearby codes

• G70 Myasthenia gravis and other myoneural disorders
• G70.0 Myasthenia gravis
• G70.00 Myasthenia gravis without (acute) exacerbation (this code)
• G70.01 Myasthenia gravis 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