Other disorders of kidney and ureter
28 codes in this section
About Section N25-N29
Section N25-N29 (N25-N29) covers other disorders of kidney and ureter. It sits within the Diseases of the genitourinary system chapter (N00-N99). This section contains 28 ICD-10-CM codes, 22 billable diagnoses you can submit on a claim, and 6 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in N25-N29
Grouped by 3-character root code. Click any code for full detail.
| N25.0 | Renal osteodystrophy | Billable |
| N25.1 | Nephrogenic diabetes insipidus | Billable |
| N25.8 | Other disorders resulting from impaired renal tubular function | Header |
| N25.81 | Secondary hyperparathyroidism of renal origin | Billable |
| N25.89 | Other disorders resulting from impaired renal tubular function | Billable |
| N25.9 | Disorder resulting from impaired renal tubular function, unspecified | Billable |
| N26.1 | Atrophy of kidney (terminal) | Billable |
| N26.2 | Page kidney | Billable |
| N26.9 | Renal sclerosis, unspecified | Billable |
| N27.0 | Small kidney, unilateral | Billable |
| N27.1 | Small kidney, bilateral | Billable |
| N27.9 | Small kidney, unspecified | Billable |
| N28.0 | Ischemia and infarction of kidney | Billable |
| N28.1 | Cyst of kidney, acquired | Billable |
| N28.8 | Other specified disorders of kidney and ureter | Header |
| N28.81 | Hypertrophy of kidney | Billable |
| N28.82 | Megaloureter | Billable |
| N28.83 | Nephroptosis | Billable |
| N28.84 | Pyelitis cystica | Billable |
| N28.85 | Pyeloureteritis cystica | Billable |
| N28.86 | Ureteritis cystica | Billable |
| N28.89 | Other specified disorders of kidney and ureter | Billable |
| N28.9 | Disorder of kidney and ureter, unspecified | Billable |
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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