Hydroureter

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

FY2007 Added to the draft code set draft Hydroureter

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited 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)

Inherited from the N10-N16 section Renal tubulo-interstitial diseases (N10-N16)

Excludes1 - never coded here

pyeloureteritis cystica (N28.85)

Includes

pyelonephritis

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Ureterectasis
Overdistension
Dilated, dilation
Distension, distention > ureter
Hydroureter
Dilatation > ureter > due to obstruction

Codes in the same group

Code	Description	Status
N13.0	Hydronephrosis with ureteropelvic junction obstruction	Valid
N13.1	Hydronephrosis with ureteral stricture, not elsewhere classified	Valid
N13.2	Hydronephrosis with renal and ureteral calculous obstruction	Valid
N13.3	Other and unspecified hydronephrosis	Not billable
N13.5	Crossing vessel and stricture of ureter without hydronephrosis	Valid
N13.6	Pyonephrosis	Valid
N13.7	Vesicoureteral-reflux	Not billable
N13.8	Other obstructive and reflux uropathy	Valid
N13.9	Obstructive and reflux uropathy, unspecified	Valid