G71.19

Applicable To

• Myotonia fluctuans

• Myotonia permanens

• Neuromyotonia [Isaacs]

• Paramyotonia congenita of von Eulenburg)

• Pseudomyotonia

• Symptomatic myotonia

Approximate Synonyms

• Bilateral myotonic cataract

• Left myotonic cataract

• Myotonic cataract

• Myotonic disorder

• Paramyotonia congenita

• Right myotonic cataract

Clinical Information

• A rare neuromuscular disorder with onset usually in late childhood or early adulthood, characterized by intermittent or continuous widespread involuntary muscle contractions; fasciculation; hyporeflexia; muscle cramp; muscle weakness; hyperhidrosis; tachycardia; and myokymia. Involvement of pharyngeal or laryngeal muscles may interfere with speech and breathing. The continuous motor activity persists during sleep and general anesthesia distinguishing this condition from stiff-person syndrome). Familial and acquired primarily autoimmune) forms have been reported. from ann ny acad sci 1998 may 13;841:482-496; Adams et al., Principles of Neurology, 6th ed, p1491)

Details

• G71.19 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• The 2023 edition of ICD-10-CM G71.19 became effective on October 1, 2022.

• This is the American ICD-10-CM version of G71.19 – other international versions of ICD-10 G71.19 may differ.