N25: Disorders resulting from impaired renal tubular function
Codes under N25 (Disorders resulting from impaired renal tubular function). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| N25.0 | Renal osteodystrophy | ✓ |
| N25.0 | Renal osteodystrophy | ✓ |
| N25.1 | Nephrogenic diabetes insipidus | ✓ |
| N25.1 | Nephrogenic diabetes insipidus | ✓ |
| N25.8 | Other disorders resulting from impaired renal tubular function | — |
| N25.8 | Other disorders resulting from impaired renal tubular function | — |
| N25.9 | Disorder resulting from impaired renal tubular function, unspecified | ✓ |
| N25.9 | Disorder resulting from impaired renal tubular function, unspecified | ✓ |
| N25.81 | Secondary hyperparathyroidism of renal origin | ✓ |
| N25.81 | Secondary hyperparathyroidism of renal origin | ✓ |
| N25.89 | Other disorders resulting from impaired renal tubular function | ✓ |
| N25.89 | Other disorders resulting from impaired renal tubular function | ✓ |
Frequently asked questions
What is ICD-10-CM code N25?
N25 is an ICD-10-CM category covering Disorders resulting from impaired renal tubular function. It contains 12 more specific diagnosis codes, 10 of which are billable.
Is N25 a billable code?
No — N25 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 N25.0 — Renal osteodystrophy). 10 of the 12 codes under N25 are billable.
What codes fall under N25?
N25 includes N25.0, N25.0, N25.1, N25.1, N25.8, plus 7 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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