Tumor Tips

Tumor Tip of the week 10-24-2025 Invasion Beyond Capsule

10-24-2025

Scenario: 2025 

  • Laparoscopic Radical Left Nephrectomy: 
  • Poorly differentiated renal cell carcinoma with clear cell features, grade 4. 
  • Largest measurable dimension of carcinoma 4.5 cm. 
  • Carcinoma invades renal sinus fat and perinephric fat 
  • Soft tissue adipose tissue margin involved with carcinoma. 
  • Lymphovascular space invasion is present. 
  • Necrosis is present. 
  • Adrenal gland no neoplasia identified. 

Question: How would you code the SSDI Invasion Beyond Capsule 

  • 0, Invasion beyond capsule not identified 
  • 1, Perinephric (beyond renal capsule) fat or tissue 
  • 2, Renal sinus 
  • 3, Gerota’s fascia 
  • 4, Any combination of codes 1-3 
  • 5, Invasion beyond capsule, NOS 

Answer: 4, Any combination of codes 1-3 

              The Tumor invaded perinephric fat (code 1) and renal sinus fat (code2) thus assigned combination code 4

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