Polymyositis with other organ involvement

This code signifies polymyositis, a chronic inflammatory myopathy characterized by progressive muscle weakness, when it is accompanied by clinical manifestations affecting other organ systems. These systemic involvements can include cardiac, pulmonary, gastrointestinal, or dermatological complications.

Apply this code when documentation clearly indicates a diagnosis of polymyositis alongside evidence of extra-muscular organ system involvement. Examples include polymyositis with interstitial lung disease, myocarditis, or dysphagia due to esophageal involvement.

• Ensure the medical record explicitly documents both polymyositis and specific organ involvement beyond the muscles.
• Do not use this code if the polymyositis is uncomplicated or if the organ involvement is not directly attributed to the polymyositis.
• Code any specific organ manifestations (e.g., interstitial lung disease, myocarditis) separately, in addition to this code, to fully capture the patient's condition.