N27.9 – Small kidney, unspecified
ICD-10-CM 2027 diagnosis code · Other disorders of kidney and ureter
ICD-10-CM code
N27.9
- Code
N27.9(claims format:N279)- Description
- Small kidney, 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
- N25-N29 Other disorders of kidney and ureter
- Parent codes
- N27
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
N27 – Small kidney of unknown cause
Includes:
- oligonephronia
Block N25-N29
Index terms for N27.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in N27
- N27.0 – Small kidney, unilateralBillable
- N27.1 – Small kidney, bilateralBillable
Frequently asked questions
What is ICD-10 code N27.9?
N27.9 is the ICD-10-CM code for small kidney, unspecified, in the block N25-N29 (Other disorders of kidney and ureter).
Is N27.9 a billable code?
Yes. N27.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does N27.9 belong to?
It belongs to category N27 – Small kidney of unknown cause.
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.