M33.2 Polymyositis

Non-billable header with 4 child codes.

Codes under M33.2

• M33.20 Polymyositis, organ involvement unspecified
• M33.21 Polymyositis with respiratory involvement
• M33.22 Polymyositis with myopathy
• M33.29 Polymyositis with other organ involvement

Code annotations containing back-references to M33.2

Back-references to M33.2

• Type 1 Excludes: G72 Other and unspecified myopathies ("polymyositis (M33.2.-)")
• Code Also: I27.21 Secondary pulmonary arterial hypertension ("polymyositis (M33.2-)")

Back-references to M33

• Type 1 Excludes: G72 Other and unspecified myopathies ("dermatopolymyositis (M33.-)")
• Type 2 Excludes: I77 Other disorders of arteries and arterioles ("collagen (vascular) diseases (M30-M36)")
• Type 2 Excludes: J82 Pulmonary eosinophilia, not elsewhere classified ("pulmonary eosinophilia due to systemic connective tissue disorders (M30-M36)")
• Code First: J84.170 Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere ("systemic connective tissue disorders (M30-M36)")
• Type 1 Excludes: L94 Other localized connective tissue disorders ("systemic connective tissue disorders (M30-M36)")

Nearby codes

• M33.10 Other dermatomyositis, organ involvement unspecified
• M33.11 Other dermatomyositis with respiratory involvement
• M33.12 Other dermatomyositis with myopathy
• M33.13 Other dermatomyositis without myopathy
• M33.19 Other dermatomyositis with other organ involvement
• M33.2 Polymyositis (this code)
• M33.20 Polymyositis, organ involvement unspecified
• M33.21 Polymyositis with respiratory involvement
• M33.22 Polymyositis with myopathy
• M33.29 Polymyositis with other organ involvement
• M33.9 Dermatopolymyositis, unspecified