M33.01

Billable

Juvenile dermatomyositis with respiratory involvement

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Juvenile dermatomyositis with involvement of the lungs and respiratory system.

Coding Tips

•Document the specific type of respiratory involvement (e.g., interstitial lung disease, pulmonary fibrosis) in addition to this code
•This code indicates the disease has progressed to affect respiratory function in a child

Clinical Significance

Juvenile dermatomyositis with respiratory involvement represents a serious complication that can be life-threatening and often indicates severe systemic disease. This manifestation requires immediate pulmonology consultation and aggressive immunosuppressive treatment.

Documentation Requirements

✓Confirmed juvenile dermatomyositis diagnosis
✓Documentation of respiratory system involvement
✓Pulmonary function tests showing impairment
✓Chest imaging demonstrating lung changes
✓Evidence of interstitial lung disease or pneumonitis
✓Exclusion of infectious causes
✓Treatment plan including respiratory support if needed
✓Monitoring plan for pulmonary function

Commonly Confused Codes

M33.11 — Use for adult dermatomyositis with respiratory involvement J84.10 — Use for idiopathic pulmonary fibrosis, not dermatomyositis-related M33.00 — Use when respiratory involvement is not specifically documented J18.9 — Use for pneumonia, not inflammatory lung disease

Code Hierarchy

└M33Dermatopolymyositis └M33.0Juvenile dermatomyositis └M33.01Juvenile dermatomyositis with respiratory involvement

└M33.01Juvenile dermatomyositis with respiratory involvement