ICD-10 Diagnosis Code M33.20

Polymyositis, organ involvement unspecified

Diagnosis Code M33.20

ICD-10: M33.20
Short Description: Polymyositis, organ involvement unspecified
Long Description: Polymyositis, organ involvement unspecified
This is the 2018 version of the ICD-10-CM diagnosis code M33.20

Valid for Submission
The code M33.20 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Systemic connective tissue disorders (M30-M36)
      • Dermatopolymyositis (M33)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code M33.20 is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)

  • 545 - CONNECTIVE TISSUE DISORDERS WITH MCC
  • 546 - CONNECTIVE TISSUE DISORDERS WITH CC
  • 547 - CONNECTIVE TISSUE DISORDERS WITHOUT CC/MCC

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The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

Synonyms
  • Eosinophilic polymyositis
  • Idiopathic polymyositis
  • Polymyositis
  • Polymyositis associated with autoimmune disease
  • Polymyositis with malignant disease

Information for Patients


Myositis

Myositis means inflammation of the muscles that you use to move your body. An injury, infection, or autoimmune disease can cause it. Two specific kinds are polymyositis and dermatomyositis. Polymyositis causes muscle weakness, usually in the muscles closest to the trunk of your body. Dermatomyositis causes muscle weakness, plus a skin rash.

Other symptoms of myositis may include

  • Fatigue after walking or standing
  • Tripping or falling
  • Trouble swallowing or breathing

Doctors may use a physical exam, lab tests, imaging tests and a muscle biopsy to diagnose myositis. There is no cure for these diseases, but you can treat the symptoms. Polymyositis and dermatomyositis are first treated with high doses of a corticosteroid. Other options include medications, physical therapy, exercise, heat therapy, assistive devices, and rest.

NIH: National Institute of Neurological Disorders and Stroke

  • Creatine phosphokinase test (Medical Encyclopedia)
  • Dermatomyositis (Medical Encyclopedia)
  • Polymyositis - adult (Medical Encyclopedia)


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