ICD-10-CM N13.4 is the diagnosis code for Hydroureter. This code falls under the section "Renal tubulo-interstitial diseases" within Chapter 14 — Diseases of the genitourinary system (N00-N99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as N13.4. They are mutually exclusive:
Understanding where N13.4 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, N13.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
N13.4 is the ICD-10-CM diagnosis code for "Hydroureter". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of N13.4 is N13 ("Obstructive and reflux uropathy"). N13.4 provides a more specific classification within this category.
N13.4 is located in Section N10-N16 — "Renal tubulo-interstitial diseases" within Chapter 14 of the ICD-10-CM Tabular List.
N13.4 has 1918 sub-code(s) that provide more specific detail: A00, A01, A02, A03, A04 and more.
Use N13.4 when the patients documented diagnosis matches "Hydroureter" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Hydroureter is N13.4.
Yes, N13.4 can be used as a primary diagnosis code since it is billable and specific.
N13.4 is in Chapter 14 of the ICD-10-CM Tabular List.
Type 1 Excludes for N13.4 include: congenital hydroureter (Q62.3-); hydroureter with infection (N13.6); vesicoureteral-reflux with hydroureter (N13.73-).
Yes, N13.4 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.