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ICD-10-CM 2027 diagnosis code

G70.0Myasthenia gravis

Not billable — use a more specific code

G70.0 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About G70.0

G70.0 is the ICD-10-CM diagnosis code for myasthenia gravis. It belongs to category G70 (myasthenia gravis and other myoneural disorders), block G70-G73 (diseases of myoneural junction and muscle) and chapter 6 (diseases of the nervous system). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within G70 (myasthenia gravis and other myoneural disorders), G70.0 is specifically for myasthenia gravis. Related codes cover toxic myoneural disorders (G70.1), congenital and developmental myasthenia (G70.2), other specified myoneural disorders (G70.8) and myoneural disorder, unspecified (G70.9).

To report this condition, pick the subcode that matches the documentation: G70.00 (without (acute) exacerbation) and G70.01 (with (acute) exacerbation).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under G70.0

Notes that apply from higher levels

Instructions written at a parent level also apply to G70.0.

› From G70 Myasthenia gravis and other myoneural disorders
Excludes1

Broader instructions also apply from Chapter 6: Diseases of the nervous system.

Codes whose notes reference G70.0

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about G70.0

Is G70.0 billable?

No. G70.0 is a header code. Report one of its more specific subcodes instead.