| N07A | Hereditary nephropathy, not elsewhere classified with C3 glomerulonephritis |
| N08 | Glomerular disorders in diseases classified elsewhere |
| N10 | Acute pyelonephritis |
| N11 | Chronic tubulo-interstitial nephritis |
| N110 | Nonobstructive reflux-associated chronic pyelonephritis |
| N111 | Chronic obstructive pyelonephritis |
| N118 | Other chronic tubulo-interstitial nephritis |
| N119 | Chronic tubulo-interstitial nephritis, unspecified |
| N12 | Tubulo-interstitial nephritis, not specified as acute or chronic |
| N13 | Obstructive and reflux uropathy |
| N130 | Hydronephrosis with ureteropelvic junction obstruction |
| N131 | Hydronephrosis with ureteral stricture, not elsewhere classified |
| N132 | Hydronephrosis with renal and ureteral calculous obstruction Hydronephrosis with renal and ureteral calculous obstruction |
| N133 | Other and unspecified hydronephrosis |
| N1330 | Unspecified hydronephrosis |
| N1339 | Other hydronephrosis |
| N134 | Hydroureter |
| N135 | Crossing vessel and stricture of ureter without hydronephrosis |
| N136 | Pyonephrosis |
| N137 | Vesicoureteral-reflux |
| N1370 | Vesicoureteral-reflux, unspecified |
| N1371 | Vesicoureteral-reflux without reflux nephropathy |
| N1372 | Vesicoureteral-reflux with reflux nephropathy without hydroureter |
| N13721 | Vesicoureteral-reflux with reflux nephropathy without hydroureter, unilateral |
| N13722 | Vesicoureteral-reflux with reflux nephropathy without hydroureter, bilateral |
| N13729 | Vesicoureteral-reflux with reflux nephropathy without hydroureter, unspecified |
| N1373 | Vesicoureteral-reflux with reflux nephropathy with hydroureter |
| N13731 | Vesicoureteral-reflux with reflux nephropathy with hydroureter, unilateral |
| N13732 | Vesicoureteral-reflux with reflux nephropathy with hydroureter, bilateral |
| N13739 | Vesicoureter-reflux w reflux nephropathy w hydroureter, unsp Vesicoureteral-reflux with reflux nephropathy with hydroureter, unspecified |
| N138 | Other obstructive and reflux uropathy |
| N139 | Obstructive and reflux uropathy, unspecified |
| N14 | Drug- & heavy-metal-induced tubulo-interstitial & tublr cond Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions |
| N140 | Analgesic nephropathy |
| N141 | Nephropathy induced by other drugs, medicaments and biological substances |
| N1411 | Contrast-induced nephropathy |
| N1419 | Nephropathy induced by other drugs, medicaments and biological substances |
| N142 | Nephropathy induced by unspecified drug, medicament or biological substance |
| N143 | Nephropathy induced by heavy metals |
| N144 | Toxic nephropathy, not elsewhere classified |
| N15 | Other renal tubulo-interstitial diseases |
| N150 | Balkan nephropathy |
| N151 | Renal and perinephric abscess |
| N158 | Other specified renal tubulo-interstitial diseases |
| N159 | Renal tubulo-interstitial disease, unspecified |
| N16 | Renal tubulo-interstitial disorders in diseases classified elsewhere |
| N17 | Acute kidney failure |
| N170 | Acute kidney failure with tubular necrosis |
| N171 | Acute kidney failure with acute cortical necrosis |
| N172 | Acute kidney failure with medullary necrosis |