Is N13 a billable code?
No. N13 is a header code that groups 18 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
N13: Obstructive and reflux uropathy
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
N13 groups related diagnoses under obstructive and reflux uropathy. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under N13
- N13.0Hydronephrosis with ureteropelvic junction obstruction
- N13.1Hydronephrosis with ureteral stricture, not elsewhere classified
- N13.2Hydronephrosis with renal and ureteral calculous obstruction
- N13.30Unspecified hydronephrosis
- N13.39Other hydronephrosis
- N13.4Hydroureter
- N13.5Crossing vessel and stricture of ureter without hydronephrosis
- N13.6Pyonephrosis
- N13.70Vesicoureteral-reflux, unspecified
- N13.71Vesicoureteral-reflux without reflux nephropathy
- N13.721Vesicoureteral-reflux with reflux nephropathy without hydroureter, unilateral
- N13.722Vesicoureteral-reflux with reflux nephropathy without hydroureter, bilateral
- N13.729Vesicoureteral-reflux with reflux nephropathy without hydroureter, unspecified
- N13.731Vesicoureteral-reflux with reflux nephropathy with hydroureter, unilateral
- N13.732Vesicoureteral-reflux with reflux nephropathy with hydroureter, bilateral
- N13.739Vesicoureteral-reflux with reflux nephropathy with hydroureter, unspecified
- N13.8Other obstructive and reflux uropathy
- N13.9Obstructive and reflux uropathy, unspecified
N13 questions
What does N13 mean?
N13 is the ICD-10-CM code for Obstructive and reflux uropathy. It is in chapter 14, Diseases of the genitourinary system (N00-N99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.