M63.8 Disorders of muscle in diseases classified elsewhere

Non-billable header with 10 child codes.

Applies from M63 Disorders of muscle in diseases classified elsewhere

Excludes1 (never code together)

• myopathy in cysticercosis (B69.81)
• myopathy in endocrine diseases (G73.7)
• myopathy in metabolic diseases (G73.7)
• myopathy in sarcoidosis (D86.87)
• myopathy in secondary syphilis (A51.49)
• myopathy in syphilis (late) (A52.78)
• myopathy in toxoplasmosis (B58.82)
• myopathy in tuberculosis (A18.09)

Code first

• underlying disease, such as:
• leprosy (A30.-)
• neoplasm (C49.-, C79.89, D21.-, D48.1-)
• schistosomiasis (B65.-)
• trichinellosis (B75)

Codes under M63.8

• M63.80 Disorders of muscle in diseases classified elsewhere, unspecified site
• M63.81 Disorders of muscle in diseases classified elsewhere, shoulder
• M63.82 Disorders of muscle in diseases classified elsewhere, upper arm
• M63.83 Disorders of muscle in diseases classified elsewhere, forearm
• M63.84 Disorders of muscle in diseases classified elsewhere, hand
• M63.85 Disorders of muscle in diseases classified elsewhere, thigh
• M63.86 Disorders of muscle in diseases classified elsewhere, lower leg
• M63.87 Disorders of muscle in diseases classified elsewhere, ankle and foot
• M63.88 Disorders of muscle in diseases classified elsewhere, other site
• M63.89 Disorders of muscle in diseases classified elsewhere, multiple sites

Diagnosis Index entries for M63.8

• Myositis › in (due to) › bilharziasis
• Myositis › in (due to) › leprosy
• Myositis › in (due to) › mycosis
• Myositis › in (due to) › schistosomiasis
• Myositis › in (due to) › trichinellosis
• Myositis › mycotic

Nearby codes

• M63 Disorders of muscle in diseases classified elsewhere
• M63.8 Disorders of muscle in diseases classified elsewhere (this code)
• M63.80 Disorders of muscle in diseases classified elsewhere, unspecified site
• M63.81 Disorders of muscle in diseases classified elsewhere, shoulder
• M63.811 Disorders of muscle in diseases classified elsewhere, right shoulder
• M63.812 Disorders of muscle in diseases classified elsewhere, left shoulder
• M63.819 Disorders of muscle in diseases classified elsewhere, unspecified shoulder