N10 Acute tubulo-interstitial nephritis

N11 Chronic tubulo-interstitial nephritis

N12 Tubulo-interstitial nephritis, not specified as acute or chronic

N13 Obstructive and reflux uropathy

N14 Drug-and heavy-metal-induced tubulo-interstitial and tutular conditions

N15 Other renal tubulo-interstitial diseases

N16 Renal tubulo-interstitial disorders in diseases classified elsewhere