ICD-10-CM · Chapter 14 · N00-N99
N26 Unspecified contracted kidney
Excludes 1 (cannot be coded together)
- contracted kidney due to hypertension (I12.-)
- diffuse sclerosing glomerulonephritis (N05.8.-)
- hypertensive nephrosclerosis (arteriolar) (arteriosclerotic) (I12.-)
- small kidney of unknown cause (N27.-)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| N26..1 | Atrophy of kidney (terminal) | Yes |
| N26..2 | Page kidney | Yes |
| N26..9 | Renal sclerosis, unspecified | Yes |
Last reviewed: September 2026