2020 ICD-10-CM Diagnosis Code N13

Obstructive and reflux uropathy

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • N13 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM N13 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of N13 - other international versions of ICD-10 N13 may differ.
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (N13) and the excluded code together.
  • calculus of kidney and ureter without hydronephrosis (
    ICD-10-CM Diagnosis Code N20
    • N20 Calculus of kidney and ureter
      • N20.0 Calculus of kidney
      • N20.1 Calculus of ureter
      • N20.2 Calculus of kidney with calculus of ureter
      • N20.9 Urinary calculus, unspecified
    N20.-
    )
  • congenital obstructive defects of renal pelvis and ureter (
    ICD-10-CM Diagnosis Code Q62.0

    Congenital hydronephrosis

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Q62.0-
    ICD-10-CM Diagnosis Code Q62.3

    Other obstructive defects of renal pelvis and ureter

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Q62.3
    )
  • hydronephrosis with ureteropelvic junction obstruction (
    ICD-10-CM Diagnosis Code Q62.11

    Congenital occlusion of ureteropelvic junction

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Q62.11
    )
  • obstructive pyelonephritis (
    ICD-10-CM Diagnosis Code N11.1

    Chronic obstructive pyelonephritis

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Pyelonephritis (chronic) associated with anomaly of pelviureteric junction
    • Pyelonephritis (chronic) associated with anomaly of pyeloureteric junction
    • Pyelonephritis (chronic) associated with crossing of vessel
    • Pyelonephritis (chronic) associated with kinking of ureter
    • Pyelonephritis (chronic) associated with obstruction of ureter
    • Pyelonephritis (chronic) associated with stricture of pelviureteric junction
    • Pyelonephritis (chronic) associated with stricture of ureter
    Type 1 Excludes
    • calculous pyelonephritis (N20.9)
    • obstructive uropathy (N13.-)
    N11.1
    )
The following code(s) above N13 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to N13:
  • N00-N99
    2020 ICD-10-CM Range N00-N99

    Diseases of the genitourinary system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the genitourinary system
  • N10-N16
    2020 ICD-10-CM Range N10-N16

    Renal tubulo-interstitial diseases

    Includes
    • pyelonephritis
    Type 1 Excludes
    • pyeloureteritis cystica (N28.85)
    Renal tubulo-interstitial diseases
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to N13:
  • Type 1 Excludes: N11.1
    ICD-10-CM Diagnosis Code N11.1

    Chronic obstructive pyelonephritis

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Pyelonephritis (chronic) associated with anomaly of pelviureteric junction
    • Pyelonephritis (chronic) associated with anomaly of pyeloureteric junction
    • Pyelonephritis (chronic) associated with crossing of vessel
    • Pyelonephritis (chronic) associated with kinking of ureter
    • Pyelonephritis (chronic) associated with obstruction of ureter
    • Pyelonephritis (chronic) associated with stricture of pelviureteric junction
    • Pyelonephritis (chronic) associated with stricture of ureter
    Type 1 Excludes
    • calculous pyelonephritis (N20.9)
    • obstructive uropathy (N13.-)
ICD-10-CM Codes Adjacent To N13
N07.8 Hereditary nephropathy, not elsewhere classified with other morphologic lesions
N07.9 Hereditary nephropathy, not elsewhere classified with unspecified morphologic lesions
N08 Glomerular disorders in diseases classified elsewhere
N10 Acute pyelonephritis
N11 Chronic tubulo-interstitial nephritis
N11.0 Nonobstructive reflux-associated chronic pyelonephritis
N11.1 Chronic obstructive pyelonephritis
N11.8 Other chronic tubulo-interstitial nephritis
N11.9 Chronic tubulo-interstitial nephritis, unspecified
N12 Tubulo-interstitial nephritis, not specified as acute or chronic
N13 Obstructive and reflux uropathy
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
N13.3 Other and unspecified hydronephrosis
N13.30 Unspecified hydronephrosis
N13.39 Other hydronephrosis
N13.4 Hydroureter
N13.5 Crossing vessel and stricture of ureter without hydronephrosis
N13.6 Pyonephrosis
N13.7 Vesicoureteral-reflux

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.