M31.31 Wegener's granulomatosis with renal involvement

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

Applies from M31.3 Wegener's granulomatosis

Applicable to

• Granulomatosis with polyangiitis
• Necrotizing respiratory granulomatosis

Risk adjustment (HCC)

• CMS-HCC V28: HCC 93 — Rheumatoid Arthritis and Other Specified Inflammatory Rheumatic 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) 542-544 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 446.4 Wegener's granulomatosis (approximate)

Code annotations containing back-references to M31.31

Back-references to M31.31

• Type 1 Excludes: J99 Respiratory disorders in diseases classified elsewhere ("Wegener's granulomatosis (M31.30-M31.31)")
• Type 1 Excludes: N08 Glomerular disorders in diseases classified elsewhere ("Wegener's granulomatosis (M31.31)")

Back-references to M31.3

• Type 2 Excludes: I77.82 Antineutrophilic cytoplasmic antibody [ANCA] vasculitis ("granulomatosis with polyangiitis (M31.3-)")
• Type 1 Excludes: L95 Vasculitis limited to skin, not elsewhere classified ("Wegener's granulomatosis (M31.3-)")

Back-references to M31

• 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 M31.31

• Disorder (of) › glomerular (in) › Wegener's granulomatosis
• Glomerulonephritis › in (due to) › Wegener's granulomatosis
• Granulomatosis › Wegener's › with renal involvement
• Syndrome › Wegener's › with › kidney involvement
• Syndrome › Wegener's › with › lung involvement › with kidney involvement
• Wegener's granulomatosis or syndrome › with › kidney involvement
• Wegener's granulomatosis or syndrome › with › lung involvement › with kidney involvement

Nearby codes

• M31.11 Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA]
• M31.19 Other thrombotic microangiopathy
• M31.2 Lethal midline granuloma
• M31.3 Wegener's granulomatosis
• M31.30 Wegener's granulomatosis without renal involvement
• M31.31 Wegener's granulomatosis with renal involvement (this code)
• M31.4 Aortic arch syndrome [Takayasu]
• M31.5 Giant cell arteritis with polymyalgia rheumatica
• M31.6 Other giant cell arteritis
• M31.7 Microscopic polyangiitis
• M31.8 Other specified necrotizing vasculopathies