ICD-10-CM Book 2025 Edition

Chapters  /  Chapter 6  /  G70-G73  /  G73
G73 Disorders of myoneural junction and muscle in diseases classified elsewhere
G73.1 Lambert-Eaton syndrome in neoplastic disease
CodeFirst underlying neoplasm (C00-D49)
Excludes1 Lambert-Eaton syndrome not associated with neoplasm (G70.80-G70.81)
nonPrimary Yes
G73.3 Myasthenic syndromes in other diseases classified elsewhere
CodeFirst underlying disease, such as:
neoplasm (C00-D49)
thyrotoxicosis (E05.-)
nonPrimary Yes
G73.7 Myopathy in diseases classified elsewhere
CodeFirst underlying disease, such as:
glycogen storage disease (E74.0-)
hyperparathyroidism (E21.0, E21.3)
hypoparathyroidism (E20.-)
lipid storage disorders (E75.-)
Excludes1 myopathy in:
rheumatoid arthritis (M05.32)
sarcoidosis (D86.87)
scleroderma (M34.82)
Sjögren syndrome (M35.03)
systemic lupus erythematosus (M32.19)
nonPrimary Yes