N28.8 – Other specified disorders of kidney and ureter

ICD-10-CM 2027 diagnosis code · Other disorders of kidney and ureter

Non-billable header

ICD-10-CM code N28.8

Code: N28.8 (claims format: N288)
Description: Other specified disorders of kidney and ureter
Billable: No – use a more specific code below
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: N28

Billable codes under N28.8

N28.8 is a header code and cannot be used on claims. Choose the most specific code:

N28.81 – Hypertrophy of kidneyBillable
N28.82 – MegaloureterBillable
N28.83 – NephroptosisBillable
N28.84 – Pyelitis cysticaBillable
N28.85 – Pyeloureteritis cysticaBillable
N28.86 – Ureteritis cysticaBillable
N28.89 – Other specified disorders of kidney and ureterBillable

Notes for N28.8

Excludes1 (not coded here):

hydroureter (N13.4)
ureteric stricture with hydronephrosis (N13.1)
ureteric stricture without hydronephrosis (N13.5)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block N25-N29

Excludes2 (not included here):

disorders of kidney and ureter with urolithiasis (N20-N23)

Related codes in N28

N28.0 – Ischemia and infarction of kidneyBillable
N28.1 – Cyst of kidney, acquiredBillable
N28.9 – Disorder of kidney and ureter, unspecifiedBillable

Frequently asked questions

What is ICD-10 code N28.8?

N28.8 is the ICD-10-CM code for other specified disorders of kidney and ureter, in the block N25-N29 (Other disorders of kidney and ureter).

Is N28.8 a billable code?

No. N28.8 is a header code with more specific child codes; report one of the billable codes listed above.

What category does N28.8 belong to?

It belongs to category N28 – Other disorders of kidney and ureter, not elsewhere classified.

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.