 
| ICD-10-CM-2023 > G00-G99 > G70-G73 > G73 | 
| G70-G73 | Diseases of myoneural junction and muscle | |
| G73 | Disorders of myoneural junction and muscle in diseases classified elsewhere | |
| G73.1 | Lambert-Eaton syndrome in neoplastic disease | |
| Code first | underlying neoplasm (C00-D49) | |
| Excl1.: | Lambert-Eaton syndrome not associated with neoplasm (G70.80-G70.81) | |
| G73.3 | Myasthenic syndromes in other diseases classified elsewhere | |
| Code first | underlying disease, such as: neoplasm (C00-D49) thyrotoxicosis (E05.-) | |
| G73.7 | Myopathy in diseases classified elsewhere | |
| Code first | underlying disease, such as: hyperparathyroidism (E21.0, E21.3) hypoparathyroidism (E20.-) glycogen storage disease (E74.0) lipid storage disorders (E75.-) | |
| Excl1.: | myopathy in: rheumatoid arthritis (M05.32) sarcoidosis (D86.87) scleroderma (M34.82) Sjögren syndrome (M35.03) systemic lupus erythematosus (M32.19) | |
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