M32.15
BillableTubulo-interstitial nephropathy in systemic lupus erythematosus
HCC Category Mapping
V28HCC 94 — Reactive and Specified Arthropathies
0.000V24HCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.307ESRDHCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.000RxHCCHCC 84 — Vasculitis and Other Autoimmune Disorders
0.000What This Code Means
Inflammation of the kidney tubules and surrounding tissue caused by systemic lupus erythematosus, affecting kidney function.
Coding Tips
- •Distinguish this from glomerular disease (M32.14); tubulo-interstitial involvement may occur with or without glomerulonephritis
- •Document degree of kidney function impairment and presence of proteinuria or hematuria
Clinical Significance
Lupus-related tubulo-interstitial nephropathy represents a different pattern of kidney involvement than glomerular disease, potentially leading to chronic kidney disease and electrolyte imbalances. This complication requires nephrology management and careful monitoring of kidney function.
Documentation Requirements
- ✓Confirmed systemic lupus erythematosus diagnosis
- ✓Evidence of tubulo-interstitial kidney involvement
- ✓Renal function studies showing tubular dysfunction
- ✓Exclusion of other causes of interstitial nephritis
- ✓Documentation of electrolyte abnormalities if present
- ✓Renal biopsy findings if available
- ✓Treatment plan and monitoring schedule
- ✓Assessment of chronic kidney disease stage if applicable
Commonly Confused Codes
Code Hierarchy
└M32Systemic lupus erythematosus (SLE)└M32.1Systemic lupus erythematosus with organ or system involvement└M32.15Tubulo-interstitial nephropathy in systemic lupus erythematosus
└M32.15Tubulo-interstitial nephropathy in systemic lupus erythematosus