ICD-10-CM G73: Disorders of myoneural junction and muscle in diseases classified elsewhere

ICD-10-CM Diagnosis Code (2025)

Official Description for G73

Disorders of myoneural junction and muscle in diseases classified elsewhere

Coding Notes & Guidelines for G73

Excludes1: Not Coded Here

Lambert-Eaton syndrome not associated with neoplasm (G70.80-G70.81)

Excludes1: Not Coded Here
  • myopathy in:
  • rheumatoid arthritis (M05.32)
  • sarcoidosis (D86.87)
  • scleroderma (M34.82)
  • Sjögren syndrome (M35.03)
  • systemic lupus erythematosus (M32.19)
Code First

underlying neoplasm (C00-D49)

Code First
  • underlying disease, such as:
  • neoplasm (C00-D49)
  • thyrotoxicosis (E05.-)
Code First
  • underlying disease, such as:
  • glycogen storage disease (E74.0-)
  • hyperparathyroidism (E21.0, E21.3)
  • hypoparathyroidism (E20.-)
  • lipid storage disorders (E75.-)

Child Codes (More Specific Codes for G73):

G73.1 - Lambert-Eaton syndrome in neoplastic disease G73.3 - Myasthenic syndromes in other diseases classified elsewhere G73.7 - Myopathy in diseases classified elsewhere

About ICD-10-CM Code G73 (Disorders of myoneural junction and muscle in diseases classified elsewhere)

ICD-10-CM code G73 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM G73 became effective on October 1, 2024.

This page provides detailed information about G73 - Disorders of myoneural junction and muscle in diseases classified elsewhere. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Disorders of myoneural junction and muscle in diseases classified elsewhere.