Is N28.8 a billable ICD-10-CM code?

No. N28.8 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does N28.8 sit in the tabular list?

Diseases of the genitourinary system (N00-N99), in the block Other disorders of kidney and ureter (N25-N29).

What cannot be coded together with N28.8?

N28.8 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.

N28.8

N28.8 — Other specified disorders of kidney and ureter

Non-billable headerICD-10-CM

N28.8 is a non-billable header ICD-10-CM code for other specified disorders of kidney and ureter. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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

Risk adjustment

N28.8 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code history

N28.8 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead N28.8

7 child codes. Green means billable.

Related codes at this level

Codes that share N28. If N28.8 is not quite right, the correct code is usually one of these.

Questions about N28.8

Is N28.8 a billable ICD-10-CM code?: No. N28.8 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does N28.8 sit in the tabular list?: Diseases of the genitourinary system (N00-N99), in the block Other disorders of kidney and ureter (N25-N29).
What cannot be coded together with N28.8?: N28.8 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.