M30.8 Other conditions related to polyarteritis nodosa

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Polyangiitis overlap syndrome

Applies from M30 Polyarteritis nodosa and related conditions

Excludes1 (never code together)

• microscopic polyarteritis (M31.7)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 94 — Systemic Lupus Erythematosus and Other Specified Systemic Connective Tissue Disorders
• CMS-HCC V22: HCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
• RxHCC V08: HCC 84 — Systemic Lupus Erythematosus and Other Systemic Connective Tissue Disorders
• ESRD V24: HCC 40

MS-DRG index

Defines the logic of DRG(s) 545-547 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 446.0 Polyarteritis nodosa (approximate)

Code annotations containing back-references to M30.8

Back-references to M30.8

• Type 1 Excludes: M35.1 Other overlap syndromes ("polyangiitis overlap syndrome (M30.8)")

Back-references to M30

• 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)")

Diagnosis Index entries for M30.8

• Polyangiitis › overlap syndrome
• Polyarteritis › nodosa › related condition NEC
• Syndrome › polyangiitis overlap

Nearby codes

• M30 Polyarteritis nodosa and related conditions
• M30.0 Polyarteritis nodosa
• M30.1 Polyarteritis with lung involvement [Churg-Strauss]
• M30.2 Juvenile polyarteritis
• M30.3 Mucocutaneous lymph node syndrome [Kawasaki]
• M30.8 Other conditions related to polyarteritis nodosa (this code)