Tubulo-interstitial nephrop in sys lupus erythematosus

This code signifies kidney disease affecting the renal tubules and interstitium, specifically when it is a manifestation of systemic lupus erythematosus (SLE). It indicates a specific type of lupus nephritis where the primary damage is to the tubulointerstitial compartments rather than the glomeruli.

Use this code when documentation explicitly states tubulo-interstitial nephropathy or nephritis as a complication or manifestation of systemic lupus erythematosus. This typically involves biopsy findings or clinical evidence pointing to inflammation and damage within the renal tubules and surrounding interstitial tissue in a patient with a confirmed SLE diagnosis.

• Always sequence the underlying systemic lupus erythematosus (M32.10 or M32.19) first, followed by this code.
• Distinguish from other forms of lupus nephritis (e.g., glomerular involvement) which are coded differently.
• Ensure documentation clearly links the tubulo-interstitial nephropathy to SLE; avoid using this code for other causes of tubulo-interstitial kidney disease.