M33.9 is a "category code," which means it's non-billable. Billable codes require more specificity. Use the list below to navigate to codes that are more specific:
10
M33.90
Dermatopolymyositis, unspecified, organ involvement unspecified
Billable
10
M33.91
Dermatopolymyositis, unspecified with respiratory involvement
Billable
10
M33.92
Dermatopolymyositis, unspecified with myopathy
Billable
10
M33.99
Dermatopolymyositis, unspecified with other organ involvement
Billable