N28: Other disorders of kidney and ureter, not elsewhere classified
Codes under N28 (Other disorders of kidney and ureter, not elsewhere classified). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| N28.0 | Ischemia and infarction of kidney | ✓ |
| N28.0 | Ischemia and infarction of kidney | ✓ |
| N28.1 | Cyst of kidney, acquired | ✓ |
| N28.1 | Cyst of kidney, acquired | ✓ |
| N28.8 | Other specified disorders of kidney and ureter | — |
| N28.8 | Other specified disorders of kidney and ureter | — |
| N28.9 | Disorder of kidney and ureter, unspecified | ✓ |
| N28.9 | Disorder of kidney and ureter, unspecified | ✓ |
| N28.81 | Hypertrophy of kidney | ✓ |
| N28.81 | Hypertrophy of kidney | ✓ |
| N28.82 | Megaloureter | ✓ |
| N28.82 | Megaloureter | ✓ |
| N28.83 | Nephroptosis | ✓ |
| N28.83 | Nephroptosis | ✓ |
| N28.84 | Pyelitis cystica | ✓ |
| N28.84 | Pyelitis cystica | ✓ |
| N28.85 | Pyeloureteritis cystica | ✓ |
| N28.85 | Pyeloureteritis cystica | ✓ |
| N28.86 | Ureteritis cystica | ✓ |
| N28.86 | Ureteritis cystica | ✓ |
| N28.89 | Other specified disorders of kidney and ureter | ✓ |
| N28.89 | Other specified disorders of kidney and ureter | ✓ |
Frequently asked questions
What is ICD-10-CM code N28?
N28 is an ICD-10-CM category covering Other disorders of kidney and ureter, not elsewhere classified. It contains 22 more specific diagnosis codes, 20 of which are billable.
Is N28 a billable code?
No — N28 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example N28.0 — Ischemia and infarction of kidney). 20 of the 22 codes under N28 are billable.
What codes fall under N28?
N28 includes N28.0, N28.0, N28.1, N28.1, N28.8, plus 17 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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