ICD-10-CM › N00-N99 › N10-N16 › N13.3 Other and unspecified hydronephrosis › N13.30
Unspecified hydronephrosis
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
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 Unspecified hydronephrosis
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.
- Hydroureter
- Pyelectasis
- Cyst > renal
- Uronephrosis
- Ureterectasis
- Hydrocalycosis
- Dilated, dilation
- Hydroureteronephrosis
- Cyst > kidney > calyceal
- Cyst > kidney > pyelogenic
- Dilatation > calyx > due to obstruction
- Dilatation > kidney > due to obstruction
- Atrophy, atrophic > kidney > hydronephrotic
- Obstruction, obstructed, obstructive > renal
- Obstruction, obstructed, obstructive > kidney
- Contraction, contracture, contracted > kidney > hydronephritic
- Hydronephrosis NEC
Codes in the same group
| Code | Description | Status |
|---|---|---|
| N13.39 | Other hydronephrosis | Valid |