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with sciatica (M54.4-)

M54.6 Pain in thoracic spine
Excludes1: pain in thoracic spine due to intervertebral disc disorder (M51.-)
M54.8 Other dorsalgia
Excludes1: dorsalgia in thoracic region (M54.6)
low back pain (M54.5)
M54.81 Occipital neuralgia
M54.89 Other dorsalgia
M54.9 Dorsalgia, unspecified
Backache NOS
Back pain NOS

Soft tissue disorders (M60-M79)

Disorders of muscles (M60-M63)

Excludes1: dermatopolymyositis (M33.-)
muscular dystrophies and myopathies (G71-G72)
myopathy in:
amyloidosis (E85.-)
polyarteritis nodosa (M30.0)
rheumatoid arthritis (M05.32)
scleroderma (M34.-)
Sj?gren's syndrome (M35.03)
systemic lupus erythematosus (M32.-)

M60 Myositis

Excludes2: inclusion body myositis [IBM] (G72.41)
M60.0 Infective myositis
Tropical pyomyositis
Use additional code (B95-B97) to identify infectious agent
M60.00 Infective myositis, unspecified site
M60.000 Infective myositis, unspecified right arm
Infective myositis, right upper limb NOS
M60.001 Infective myositis, unspecified left arm
Infective myositis, left upper limb NOS
M60.002 Infective myositis, unspecified arm
Infective myositis, upper limb NOS
M60.003 Infective myositis, unspecified right leg
Infective myositis, right lower limb NOS
M60.004 Infective myositis, unspecified left leg
Infective myositis, left lower limb NOS
M60.005 Infective myositis, unspecified leg
Infective myositis, lower limb NOS
M60.