What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).
When is it used?
- May be used when a clinician documents myasthenia gravis in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
6Diseases of the nervous system (G00-G99)
block
G70-G73Diseases of myoneural junction and muscle
category
G70Myasthenia gravis and other myoneural disorders
currentG70
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
NeurologistGeneral Physician
Related codes
Sibling codes
Mapped diagnoses and classifications
SNOMED_CT 230670003high
Familial infantile myasthenia
Source: SNOMED International ICD-10 map
SNOMED_CT 193207007high
Juvenile or adult myasthenia gravis
Source: SNOMED International ICD-10 map
SNOMED_CT 91637004high
Myasthenia gravis
Source: SNOMED International ICD-10 map
SNOMED_CT 230685009high
Myasthenia gravis associated with thymoma
Source: SNOMED International ICD-10 map
SNOMED_CT 521000146105high
Myasthenia gravis caused by MuSK (muscle-specific kinase) antibodies
Source: SNOMED International ICD-10 map
SNOMED_CT 16415791000119104high
Myasthenia gravis in remission
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
G70.0
Replacement codes
G70.00 — Myasthenia gravis without (acute) exacerbationG70.01 — Myasthenia gravis with (acute) exacerbation
Common synonyms
Myasthenia gravis
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.