Congenital myopathies include, but are not limited to:
(G71.2) nemaline myopathy (characterized by presence of "nemaline rods" in the muscle),
(G71.2) multi/minicore myopathy (characterized by multiple small "cores" or areas of disruption in the muscle fibers),
(G71.2) centronuclear myopathy (or myotubular myopathy) (in which the nuclei are abnormally found in the center of the muscle fibers), a rare muscle wasting disorder
(G71.3) Mitochondrial myopathies, which are due to defects in mitochondria, which provide a critical source of energy for muscle
(G72.3) Familial periodic paralysis
(G72.4) Inflammatory myopathies, which are caused by problems with the immune system attacking components of the muscle, leading to signs of inflammation in the muscle
(G73.6) Metabolic myopathies, which result from defects in biochemical metabolism that primarily affect muscle
(G73.6/E74.0) Glycogen storage diseases, which may affect muscle
(G73.6/E75) Lipid storage disorder
(G72.89) Other myopathies
Brody myopathy
Congenital myopathy with abnormal subcellular organelles
Fingerprint body myopathy
Inclusion body myopathy 2
Megaconial myopathy
Myofibrillar myopathy
Rimmed vacuolar myopathy

Acquired
(G72.0 - G72.2) External substance induced myopathy
(G72.0) Drug-induced myopathy
Glucocorticoid myopathy is caused by this class of steroids increasing the breakdown of the muscle proteins leading to muscle atrophy. (G72.1) Alcoholic myopathy
(G72.2) Myopathy due to other toxic agents - including atypical myopathy in horses caused by toxins in sycamore seeds and seedlings. (M33.0-M33.1)
Dermatomyositis produces muscle weakness and skin changes. The skin rash is reddish and most commonly occurs on the face, especially around the eyes, and over the knuckles and elbows. Ragged nail folds with visible capillaries can be present. It can often be treated by drugs like corticosteroids or immunosuppressants. (M33.2)
Polymyositis produces muscle weakness.
Inherited forms
(G71.0) Dystrophies (or muscular dystrophies) are a subgroup of myopathies characterized by muscle degeneration and regeneration. Clinically, muscular dystrophies are typically progressive, because the muscles ability to regenerate is eventually lost, leading to progressive weakness, often leading to use of a wheelchair, and eventually death, usually related to respiratory weakness. (G71.1) Myotonia
Neuromyotonia
(G71.2) The congenital myopathies do not show evidence for either a progressive dystrophic process (i.e., muscle death) or inflammation, but instead characteristic microscopic changes are seen in association with reduced contractile ability of the muscles.