ICD-10 Diagnosis Code M63.821

Disorders of muscle in diseases classd elswhr, r up arm

Diagnosis Code M63.821

ICD-10: M63.821
Short Description: Disorders of muscle in diseases classd elswhr, r up arm
Long Description: Disorders of muscle in diseases classified elsewhere, right upper arm
This is the 2017 version of the ICD-10-CM diagnosis code M63.821


Code Classification
  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Disorders of muscles (M60-M63)
      • Disorders of muscle in diseases classified elsewhere (M63)

Information for Patients


Muscle Disorders

Also called: Myopathy

Your muscles help you move and help your body work. Different types of muscles have different jobs. There are many problems that can affect muscles. Muscle disorders can cause weakness, pain or even paralysis.

Causes of muscle disorders include

  • Injury or overuse, such as sprains or strains, cramps or tendinitis
  • A genetic disorder, such as muscular dystrophy
  • Some cancers
  • Inflammation, such as myositis
  • Diseases of nerves that affect muscles
  • Infections
  • Certain medicines

Sometimes the cause is not known.

  • Caring for muscle spasticity or spasms
  • Compartment syndrome
  • Contracture deformity
  • Creatine phosphokinase test
  • Electromyography
  • Eyelid twitch
  • Hypotonia
  • Muscle aches
  • Muscle atrophy
  • Muscle function loss
  • Muscle twitching
  • Rhabdomyolysis
  • Weakness


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