Includes:

  • pyelonephritis

Excludes1

  • pyeloureteritis cystica (N28.85)
  1. N13 Obstructive and reflux uropathy

    1. N13.0 Hydronephrosis with ureteropelvic junction obstruction

      Inclusion term(s):

      • Hydronephrosis due to acquired occlusion of ureteropelvic junction
    2. N13.1 Hydronephrosis with ureteral stricture, not elsewhere classified

    3. N13.2 Hydronephrosis with renal and ureteral calculous obstruction

    4. N13.3 Other and unspecified hydronephrosis

      1. N13.30 Unspecified hydronephrosis

      2. N13.39 Other hydronephrosis

    5. N13.4 Hydroureter

    6. N13.5 Crossing vessel and stricture of ureter without hydronephrosis

      Inclusion term(s):

      • Kinking and stricture of ureter without hydronephrosis
    7. N13.6 Pyonephrosis

      Inclusion term(s):

      • Conditions in N13.0-N13.5 with infection
      • Obstructive uropathy with infection
    8. N13.7 Vesicoureteral-reflux

      1. N13.70 Vesicoureteral-reflux, unspecified

        Inclusion term(s):

        • Vesicoureteral-reflux NOS
      2. N13.71 Vesicoureteral-reflux without reflux nephropathy

      3. N13.72 Vesicoureteral-reflux with reflux nephropathy without hydroureter

        • 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
      4. N13.73 Vesicoureteral-reflux with reflux nephropathy with hydroureter

        • 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
    9. N13.8 Other obstructive and reflux uropathy

      Inclusion term(s):

      • Urinary tract obstruction due to specified cause
    10. N13.9 Obstructive and reflux uropathy, unspecified

      Inclusion term(s):

      • Urinary tract obstruction NOS
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.