DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

G70 Myasthenia gravis and other myoneural disorders

  • Header · not billable

G70 is not billable. The category heads 8 billable codes in FY2027, grouped under 5 subdivisions.

Index → code

Where it sits

  1. Chapter 6 Diseases of the nervous system (G00-G99)
  2. G70-G73 Diseases of myoneural junction and muscle (G70-G73)
  3. G70 Myasthenia gravis and other myoneural disorders
Billable codes
8
Subdivisions
5
CC / MCC codes
2 / 1
HCC V28 codes
8
New FY2027
0
Index entries
42

Codes in G70

  1. G70.0
    Myasthenia gravis
    Header
  2. G70.00
    Myasthenia gravis without (acute) exacerbation
    Billable196
    Inclusion terms 1

    Inclusion terms

    • Myasthenia gravis NOS
  3. G70.01
    Myasthenia gravis with (acute) exacerbation
    BillableMCC195
    Inclusion terms 1

    Inclusion terms

    • Myasthenia gravis in crisis
  4. G70.1
    Toxic myoneural disorders
    Billable196
    Code first 1

    Code first

    • (T51-T65) to identify toxic agent T51 T65
  5. G70.2
    Congenital and developmental myasthenia
    Billable196
  6. G70.8
    Other specified myoneural disorders
    Header
  7. G70.80
    Lambert-Eaton syndrome, unspecified
    BillableCC196
    Inclusion terms 1

    Inclusion terms

    • Lambert-Eaton syndrome NOS
  8. G70.81
    Lambert-Eaton syndrome in disease classified elsewhere
    BillableCC196
    Excludes1 1, Code first 1

    Excludes1

    • Lambert-Eaton syndrome in neoplastic disease (G73.1) G73.1

    Code first

    • underlying disease
  9. G70.89
    Other specified myoneural disorders
    Billable196
  10. G70.9
    Myoneural disorder, unspecified
    Billable196

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At G70

Excludes1

Notes that also apply

Chapter 6 instructions (Excludes2 8): printed on the chapter 6 page.

Index entries

  • Erb-Goldflam disease or syndrome → G70.00
  • Goldflam-Erb disease or syndrome → G70.00
  • Oppenheim's disease → G70.2
  • Myasthenia → G70.9
  • Neuromyopathy → G70.9
  • Myastheniagravis → G70.00
  • Paralysis, paralytic (complete) (incomplete)asthenic bulbar → G70.00
  • Paralysis, paralytic (complete) (incomplete)bulbospinal → G70.00
  • SyndromeHoppe-Goldflam → G70.00
  • Syndromepseudoparalytica → G70.00
  • Erb-Goldflam disease or syndromewith exacerbation (acute) → G70.01
  • Erb-Goldflam disease or syndromein crisis → G70.01
  • Goldflam-Erb disease or syndromewith exacerbation (acute) → G70.01
  • Goldflam-Erb disease or syndromein crisis → G70.01
  • Amyotoniacongenita → G70.2
  • Myastheniacongenital → G70.2
  • Myastheniadevelopmental → G70.2
  • SyndromeLambert-Eaton → G70.80
  • Disease, diseasedmyoneural → G70.9
  • Disease, diseasedneuromuscular system → G70.9
  • Disorder (of)myoneural → G70.9
  • Disorder (of)neuromuscular → G70.9
  • Syndromemyasthenic → G70.9
  • Myastheniagravispseudoparalytica → G70.00
  • Myastheniagraviswith exacerbation (acute) → G70.01
  • Myastheniagravisin crisis → G70.01
  • Paralysis, paralytic (complete) (incomplete)asthenic bulbarwith exacerbation (acute) → G70.01
  • Paralysis, paralytic (complete) (incomplete)asthenic bulbarin crisis → G70.01
  • Paralysis, paralytic (complete) (incomplete)bulbospinalwith exacerbation (acute) → G70.01
  • Paralysis, paralytic (complete) (incomplete)bulbospinalin crisis → G70.01
  • SyndromeHoppe-Goldflamwith exacerbation (acute) → G70.01
  • SyndromeHoppe-Goldflamin crisis → G70.01
  • Syndromepseudoparalyticawith exacerbation (acute) → G70.01
  • Syndromepseudoparalyticain crisis → G70.01
  • Disorder (of)myoneuraldue to lead → G70.1
  • Disorder (of)myoneuraltoxic → G70.1
  • Disorder (of)neuromusculartoxic → G70.1
  • Disorder (of)myoneuralspecified NEC → G70.89
  • Disorder (of)neuromuscularspecified NEC → G70.89
  • Myastheniagravispseudoparalyticawith exacerbation (acute) → G70.01

2 more, longer entries are not listed; the search box finds them by word.

NCHS Alphabetic Index. Index first, then the Tabular List.

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