ICD-10-CM 2027
ICD-10 code for ureter accessory
From the official ICD-10-CM alphabetic index entry “Accessory (congenital) › ureter”. Page updated September 29, 2026.
About coding ureter accessory
The ICD-10-CM code for ureter accessory is Q62.5 (Duplication of ureter).
Within Q62 (congenital obstructive defects of renal pelvis and congenital malformations of ureter), Q62.5 is specifically for duplication of ureter. Related codes cover congenital hydronephrosis (Q62.0), congenital occlusion of ureter (Q62.1), congenital megaureter (Q62.2), other obstructive defects of renal pelvis and ureter (Q62.3), agenesis of ureter (Q62.4), malposition of ureter (Q62.6), congenital vesico-uretero-renal reflux (Q62.7) and other congenital malformations of ureter (Q62.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 698 (Other Kidney and Urinary Tract Diagnoses with MCC, relative weight 1.6398), DRG 699 (Other Kidney and Urinary Tract Diagnoses with CC, relative weight 1.0003) and DRG 700 (Other Kidney and Urinary Tract Diagnoses without CC/MCC, relative weight 0.6741), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about ureter accessory ICD-10 codes
What is the ICD-10 code for ureter accessory?
- Q62.5 — Duplication of ureter.
Is Q62.5 billable?
- Yes. Q62.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q62.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q62.5 as a principal diagnosis.
Is Q62.5 a CC or MCC?
- No. Q62.5 is neither a CC nor an MCC under MS-DRG v44.0.