M33.29
BillablePolymyositis with other organ involvement
HCC Category Mapping
V28HCC 93 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.175V24HCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.307ESRDHCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.000RxHCCHCC 83 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.000What This Code Means
A rare autoimmune disease causing muscle inflammation and weakness with involvement of organs other than the lungs or muscles.
Coding Tips
- •Clearly document which organ systems are affected (cardiac, GI, renal, etc.)
- •Code additional conditions for specific organ involvement when applicable
Clinical Significance
Polymyositis with other organ involvement indicates complex systemic disease beyond muscle inflammation, often requiring multidisciplinary management. These patients typically have more severe disease with higher risk of complications and treatment resistance.
Documentation Requirements
- ✓Confirmed polymyositis diagnosis
- ✓Documentation of specific organ systems involved beyond respiratory/muscle
- ✓Evidence of organ dysfunction or inflammation
- ✓Clinical assessment of disease activity
- ✓Multidisciplinary treatment approach
- ✓Monitoring plan for affected organ systems
- ✓Coordination with appropriate subspecialists
- ✓Assessment of treatment response across organ systems
Commonly Confused Codes
Code Hierarchy
└M33Dermatopolymyositis└M33.2Polymyositis└M33.29Polymyositis with other organ involvement
└M33.29Polymyositis with other organ involvement