ICD-10-CM Book 2025 Edition
Chapters ICD-10-CM Book Table of Content /
N10-N16 Renal tubulo-interstitial diseases /
N11 Chronic tubulo-interstitial nephritis
Billable ICD-10-CM Code N11.1
N11.1
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Chronic obstructive pyelonephritis 
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Pyelonephritis (chronic) associated with anomaly of pelviureteric junction
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Pyelonephritis (chronic) associated with anomaly of pyeloureteric junction
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Pyelonephritis (chronic) associated with crossing of vessel
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Pyelonephritis (chronic) associated with kinking of ureter
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Pyelonephritis (chronic) associated with obstruction of ureter
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Pyelonephritis (chronic) associated with stricture of pelviureteric junction
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Pyelonephritis (chronic) associated with stricture of ureter
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excludes1
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calculous pyelonephritis (N20.9) |
obstructive uropathy (N13.-) |
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