M62.83 Muscle spasmNon-billable header with 3 child codes.
M62.5A2 Muscle wasting and atrophy, not elsewhere classified, back, lumbosacralM62.5A9 Muscle wasting and atrophy, not elsewhere classified, back, unspecified levelM62.8 Other specified disorders of muscleM62.81 Muscle weakness (generalized)M62.82 RhabdomyolysisM62.83 Muscle spasm (this code)M62.830 Muscle spasm of backM62.831 Muscle spasm of calfM62.838 Other muscle spasmM62.84 SarcopeniaM62.85 Dysfunction of the multifidus muscles, lumbar region