In simple words: This is a type of muscle inflammation seen in children with an accompanying skin rash. It can affect other organs as well, making the child feel generally unwell.

This code represents juvenile dermatomyositis, an autoimmune inflammatory muscle disorder affecting children 18 years of age and younger.It is characterized by muscle weakness, skin rash, and possible systemic manifestations. The specific organ involvement is unspecified.

Example 1: A 10-year-old child presents with muscle weakness, a purplish rash on the face and upper body, and difficulty swallowing. After diagnostic testing, including a muscle biopsy, juvenile dermatomyositis with unspecified organ involvement (M33.00) is diagnosed., A 7-year-old child exhibits muscle pain, fatigue, and a distinctive skin rash. Further examination reveals elevated muscle enzymes and inflammation. The diagnosis is juvenile dermatomyositis (M33.00) as the affected organ is not yet determined., A 15-year-old child experiences weakness in the legs and a rash around the eyes. Following additional tests and the absence of specific organ involvement findings, they receive a diagnosis of juvenile dermatomyositis (M33.00).

Documentation should include signs and symptoms, physical exam findings, lab results (muscle enzymes, ESR, antibody tests), imaging results (MRI), EMG findings, biopsy results, and details of organ involvement if present.