Other dermatomyositis, organ involvement unspecified

This code signifies a form of dermatomyositis that is not classified as juvenile, where there is evidence of systemic involvement, but the specific organ(s) affected are not documented or are unknown. Dermatomyositis is an inflammatory myopathy characterized by muscle weakness and a distinctive skin rash. The "other" designation implies it's not the juvenile form, and "organ involvement unspecified" means the systemic manifestations are present but not precisely identified.

Use this code when the physician documents "dermatomyositis with systemic involvement" or "dermatomyositis with internal organ involvement" without specifying which organs are affected. This code is appropriate when the medical record clearly indicates dermatomyositis and systemic manifestations, but lacks the specificity to assign a more detailed code for organ involvement. Documentation should confirm the diagnosis of dermatomyositis and the presence of systemic symptoms.

• Do not use this code if the specific organ involvement (e.g., lung, heart, gastrointestinal) is documented; instead, code to the more specific M33.11-M33.19 series.
• Always review the entire medical record for any mention of specific organ involvement before assigning this unspecified code.
• This code should be sequenced as a primary diagnosis when dermatomyositis is the reason for the encounter, or as a secondary diagnosis when it is a co-morbidity.