N13.3
⚠ Non-billable
Other and unspecified hydronephrosis
ICD-10-CM · FY2026 · Diseases of the Genitourinary System
Code
N13.3
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Genitourinary System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code N13.3?
ICD-10-CM code N13.3 represents Other and unspecified hydronephrosis. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Genitourinary System chapter, effective October 1, 2025 – September 30, 2026.
Is N13.3 billable?
No. N13.3 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is N13.3 in?
N13.3 belongs to the Diseases of the Genitourinary System chapter (N00–N99) of ICD-10-CM.
Related codes in the N13 category
N13
Obstructive and reflux uropathy
Non-billable
N13.0
Hydronephrosis with ureteropelvic junction obstruction
Billable
N13.1
Hydronephrosis with ureteral stricture, not elsewhere classified
Billable
N13.2
Hydronephrosis with renal and ureteral calculous obstruction
Billable
N13.4
Hydroureter
Billable
N13.5
Crossing vessel and stricture of ureter without hydronephrosis
Billable
N13.6
Pyonephrosis
Billable
N13.7
Vesicoureteral-reflux
Non-billable
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