Q64.31 Congenital bladder neck obstruction

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis. Exempt from present-on-admission (POA) reporting.

Applicable to

• Congenital obstruction of vesicourethral orifice

MS-DRG index

Defines the logic of DRG(s) 698-700 in MDC 11.

Approximate ICD-9-CM (GEMs)

• 753.6 Atresia and stenosis of urethra and bladder neck (approximate)

Code annotations containing back-references to Q64.31

Back-references to Q64.3

• Type 1 Excludes: N32.0 Bladder-neck obstruction ("congenital bladder-neck obstruction (Q64.3-)")
• Type 1 Excludes: N35 Urethral stricture ("congenital urethral stricture (Q64.3-)")

Diagnosis Index entries for Q64.31

• Anomaly, anomalous (congenital) (unspecified type) › bladder › neck obstruction
• Atresia, atretic › bladder (neck) › obstruction
• Atresia, atretic › vesicourethral orifice
• Malformation (congenital) › bladder › neck obstruction
• Obstruction, obstructed, obstructive › bladder-neck (acquired) › congenital
• Obstruction, obstructed, obstructive › vesicourethral orifice › congenital
• Stenosis, stenotic (cicatricial) › bladder-neck (acquired) › congenital
• Stenosis, stenotic (cicatricial) › vesicourethral orifice
• Stricture › vesicourethral orifice › congenital

Nearby codes

• Q64.11 Supravesical fissure of urinary bladder
• Q64.12 Cloacal exstrophy of urinary bladder
• Q64.19 Other exstrophy of urinary bladder
• Q64.2 Congenital posterior urethral valves
• Q64.3 Other atresia and stenosis of urethra and bladder neck
• Q64.31 Congenital bladder neck obstruction (this code)
• Q64.32 Congenital stricture of urethra
• Q64.33 Congenital stricture of urinary meatus
• Q64.39 Other atresia and stenosis of urethra and bladder neck
• Q64.4 Malformation of urachus
• Q64.5 Congenital absence of bladder and urethra