N13.9 – Obstructive and reflux uropathy, unspecified
ICD-10-CM 2027 diagnosis code · Renal tubulo-interstitial diseases
ICD-10-CM code
N13.9
- Code
N13.9(claims format:N139)- Description
- Obstructive and reflux uropathy, unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 14. Diseases of the genitourinary system (N00-N99)
- Block
- N10-N16 Renal tubulo-interstitial diseases
- Parent codes
- N13
Notes for N13.9
Applicable to:
- Urinary tract obstruction NOS
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
N13 – Obstructive and reflux uropathy
Excludes2 (not included here):
Block N10-N16
Includes:
- pyelonephritis
Excludes1 (not coded here):
- pyeloureteritis cystica (N28.85)
Index terms for N13.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in N13
- N13.0 – Hydronephrosis with ureteropelvic junction obstructionBillable
- N13.1 – Hydronephrosis with ureteral stricture, not elsewhere classifiedBillable
- N13.2 – Hydronephrosis with renal and ureteral calculous obstructionBillable
- N13.3 – Other and unspecified hydronephrosisHeader
- N13.4 – HydroureterBillable
- N13.5 – Crossing vessel and stricture of ureter without hydronephrosisBillable
- N13.6 – PyonephrosisBillable
- N13.7 – Vesicoureteral-refluxHeader
- N13.8 – Other obstructive and reflux uropathyBillable
Frequently asked questions
What is ICD-10 code N13.9?
N13.9 is the ICD-10-CM code for obstructive and reflux uropathy, unspecified, in the block N10-N16 (Renal tubulo-interstitial diseases).
Is N13.9 a billable code?
Yes. N13.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does N13.9 belong to?
It belongs to category N13 – Obstructive and reflux uropathy.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.