ICD-10-CM › N00-N99 › N25-N29 › N27 Small kidney of unknown cause › N27.9
Small kidney, unspecified
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 Small kidney, unspecified
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 N27 Small kidney of unknown cause
Includes
- oligonephronia
Inherited from the N25-N29 section Other disorders of kidney and ureter (N25-N29)
Excludes2 - not included here
- disorders of kidney and ureter with urolithiasis (N20-N23)
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.
- Small > kidney
Codes in the same group
| Code | Description | Status |
|---|---|---|
| N27.0 | Small kidney, unilateral | Valid |
| N27.1 | Small kidney, bilateral | Valid |