ICD-10-CM Code N13.1

Valid for Submission

N13.1 is a billable code used to specify a medical diagnosis of hydronephrosis with ureteral stricture, not elsewhere classified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code N13.1 might also be used to specify conditions or terms like hydronephrosis co-occurrent and due to ureteral stricture or hydronephrosis due to ureteral obstruction or hydronephrosis due to ureteral orifice obstruction or stricture of ureter.

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code N13.1:

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

• Hydronephrosis with ureteral stricture with infection N13.6

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code N13.1 are found in the index:

• - Hydronephrosis (atrophic) (early) (functionless) (intermittent) (primary) (secondary) NEC - N13.30
  • - with
    • - obstruction (by) (of)
      • - ureteral NEC - N13.1
    • - ureteral stricture NEC - N13.1

• - Kink, kinking
  • - ureter (pelvic junction) - N13.5
    • - with
      • - hydronephrosis - N13.1

• - Obstruction, obstructed, obstructive
  • - ureter (functional) (pelvic junction) NEC - N13.5
    • - with
      • - hydronephrosis - N13.1

• - Stricture - See Also: Stenosis;
  • - ureter (postoperative) - N13.5
    • - with
      • - hydronephrosis - N13.1

Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

• Hydronephrosis co-occurrent and due to ureteral stricture
• Hydronephrosis due to ureteral obstruction
• Hydronephrosis due to ureteral orifice obstruction
• Stricture of ureter

Diagnostic Related Groups

The ICD-10 code N13.1 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). applicable from 10/01/2019 through 09/30/2020.

• 693 - URINARY STONES WITH MCC
• 694 - URINARY STONES WITHOUT MCC

Convert N13.1 to ICD-9

• 591 - Hydronephrosis (Combination Flag)
• 593.3 - Stricture of ureter (Combination Flag)

Code Classification

• Diseases of the genitourinary system (N00–N99)
  • Renal tubulo-interstitial diseases (N10-N16)
    • Obstructive and reflux uropathy (N13)

Code History

• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
  (First year ICD-10-CM implemented into the HIPAA code set)
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

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