N13.3 is the authoritative medical code for Other and unspecified hydronephrosis. This classification is used in medical billing and clinical recording to specify the clinical criteria for other and unspecified hydronephrosis (ICD-10-CM N13.3), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Sequencing, inclusion, and exclusion notes published for N13.3 in the official ICD-10-CM tabular list.
Conditions the official ICD-10-CM tabular list includes under this code.
Conditions that can never be reported with this code; the two are mutually exclusive.
Conditions not covered by this code, but which may be reported alongside it when both are present.
No. N13.3 (Other and unspecified hydronephrosis) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Per Excludes1 instructions, N13.3 must not be reported with: hydronephrosis with infection (N13.6); pyeloureteritis cystica (N28.85).
Per Excludes2 instructions, N13.3 and the following may both be reported when both are present: calculus of kidney and ureter without hydronephrosis (N20.-); congenital obstructive defects of renal pelvis and ureter (Q62.0-Q62.3); hydronephrosis with ureteropelvic junction obstruction (Q62.11); obstructive pyelonephritis (N11.1).
Official ICD-10-CM classifications in the same code family as N13.3, with their registry titles.
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: