N13.8 Other obstructive and reflux uropathy

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Urinary tract obstruction due to specified cause

Code first

• , if applicable, any causal condition, such as:
• enlarged prostate (N40.1)

Applies from N13 Obstructive and reflux uropathy

Excludes2 (not included here)

• calculus of kidney and ureter without hydronephrosis (N20.-)
• congenital obstructive defects of renal pelvis and ureter (Q62.0-Q62.3)
• hydronephrosis with ureteropelvic junction obstruction (Q62.11)
• obstructive pyelonephritis (N11.1)

MS-DRG index

Defines the logic of DRG(s) 693-694 in MDC 11.

Approximate ICD-9-CM (GEMs)

• 593.4 Other ureteric obstruction (approximate)

Code annotations containing back-references to N13.8

Back-references to N13.8

• Use Additional: N40.1 Benign prostatic hyperplasia with lower urinary tract symptoms ("urinary obstruction (N13.8)")
• Use Additional: N40.3 Nodular prostate with lower urinary tract symptoms ("urinary obstruction (N13.8)")

Back-references to N13

• Type 1 Excludes: N11.1 Chronic obstructive pyelonephritis ("obstructive uropathy (N13.-)")
• Code Also: N80.A4 Superficial endometriosis of ureter (", if applicable, obstructive and reflux uropathy (N13.-)")
• Code Also: N80.A5 Deep endometriosis of ureter (", if applicable, obstructive and reflux uropathy (N13.-)")
• Code Also: N80.A6 Endometriosis of ureter, unspecified depth (", if applicable, obstructive and reflux uropathy (N13.-)")

Diagnosis Index entries for N13.8

• Anuria › postrenal
• Crisis › Dietl's
• Dietl's crisis
• Extravasation › pelvicalyceal
• Extravasation › pyelosinus
• Nephropathy › obstructive
• Obstruction, obstructed, obstructive › renal › outflow
• Obstruction, obstructed, obstructive › urinary (moderate) › specified NEC
• Ovary, ovarian › vein syndrome
• Tortuous › ureter
• Uropathy › obstructive › specified NEC
• Uropathy › reflux › specified NEC

Nearby codes

• N13.729 Vesicoureteral-reflux with reflux nephropathy without hydroureter, unspecified
• N13.73 Vesicoureteral-reflux with reflux nephropathy with hydroureter
• N13.731 Vesicoureteral-reflux with reflux nephropathy with hydroureter, unilateral
• N13.732 Vesicoureteral-reflux with reflux nephropathy with hydroureter, bilateral
• N13.739 Vesicoureteral-reflux with reflux nephropathy with hydroureter, unspecified
• N13.8 Other obstructive and reflux uropathy (this code)
• N13.9 Obstructive and reflux uropathy, unspecified