Q64.6Congenital diverticulum of bladder

Q64.6 is the ICD-10-CM diagnosis code for congenital diverticulum of bladder. It belongs to category Q64 (other congenital malformations of urinary system), block Q60-Q64 (congenital malformations of the urinary system) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Q64 (other congenital malformations of urinary system), Q64.6 is specifically for congenital diverticulum of bladder. Related codes cover epispadias (Q64.0), exstrophy of urinary bladder (Q64.1), congenital posterior urethral valves (Q64.2), other atresia and stenosis of urethra and bladder neck (Q64.3), malformation of urachus (Q64.4), congenital absence of bladder and urethra (Q64.5), other and unspecified congenital malformations of bladder and urethra (Q64.7), other specified congenital malformations of urinary system (Q64.8) and 1 more.

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.

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 753.8 (other specified anomalies of bladder and urethra).