G70.01 Myasthenia gravis with (acute) exacerbation

The ICD-10-CM code for Myasthenia gravis with (acute) exacerbation is G70.01 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

6: Diseases of the nervous system (G00-G99)

Section

G70-G73: Diseases of myoneural junction and muscle (G70-G73)

Category G70

11 codes (8 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to G70.01:

• Erb-Goldflam disease or syndrome › in crisis
• Goldflam-Erb disease or syndrome › with exacerbation (acute)
• Goldflam-Erb disease or syndrome › in crisis
• Erb-Goldflam disease or syndrome › with exacerbation (acute)
• Myasthenia › gravis › in crisis
• Paralysis, paralytic (complete) (incomplete) › asthenic bulbar › with exacerbation (acute)
• Myasthenia › gravis › with exacerbation (acute)
• Paralysis, paralytic (complete) (incomplete) › asthenic bulbar › in crisis

Inclusion Terms

• Myasthenia gravis in crisis

U.S. Hospital Utilization

• An estimated 10,970 U.S. inpatient stays in 2023 included G70.01 among the documented diagnoses.
• 8,620 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Dominant/nondominant side (TOC entry)

a. Dominant/nondominant side ................................................................................................. 45

Pain - Category G89 (TOC entry)

b. Pain - Category G89.............................................................................................................. 45

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)