ICD-10-CM Codes (2025)

• N13.39	Other hydronephrosis

• N13.0	Hydronephrosis with ureteropelvic junction obstruction
  N13.1	Hydronephrosis with ureteral stricture, not elsewhere classified
  N13.2	Hydronephrosis with renal and ureteral calculous obstruction
  N13.30	Unspecified hydronephrosis
  N13.39	Other hydronephrosis
  N13.4	Hydroureter
  N13.5	Crossing vessel and stricture of ureter without hydronephrosis
  N13.6	Pyonephrosis
  N13.70	Vesicoureteral-reflux, unspecified
  N13.71	Vesicoureteral-reflux without reflux nephropathy
  N13.721	Vesicoureteral-reflux with reflux nephropathy without hydroureter, unilateral
  N13.722	Vesicoureteral-reflux with reflux nephropathy without hydroureter, bilateral
  N13.729	Vesicoureteral-reflux with reflux nephropathy without hydroureter, unspecified
  N13.731	Vesicoureteral-reflux with reflux nephropathy with hydroureter, unilateral
  N13.732	Vesicoureteral-reflux with reflux nephropathy with hydroureter, bilateral
  N13.739	Vesicoureteral-reflux with reflux nephropathy with hydroureter, unspecified
  N13.8	Other obstructive and reflux uropathy
  N13.9	Obstructive and reflux uropathy, unspecified

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