ICD-10-CM 2027
ICD-10 code for bladder anomaly
From the official ICD-10-CM alphabetic index entry “Anomaly, anomalous (congenital) (unspecified type) › bladder”. Page updated September 29, 2026.
About coding bladder anomaly
The ICD-10-CM code for bladder anomaly is Q64.70 (Unspecified congenital malformation of bladder and urethra). The official index lists 9 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Q64.70.
Within Q64.7, choose Q64.70 (Unspecified congenital malformation of bladder and urethra) only when documentation doesn't support a more specific option: congenital prolapse of urethra (Q64.71), congenital prolapse of urinary meatus (Q64.72), congenital urethrorectal fistula (Q64.73), Double urethra (Q64.74), Double urinary meatus (Q64.75) and other congenital malformations of bladder and urethra (Q64.79).
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.
More specific bladder anomaly codes (official index)
- absence Q64.5 — Congenital absence of bladder and urethra
- diverticulum Q64.6 — Congenital diverticulum of bladder
- exstrophy Q64.10 — Exstrophy of urinary bladder, unspecified
- cloacal Q64.12 — Cloacal exstrophy of urinary bladder
- extroversion Q64.19 — Other exstrophy of urinary bladder
- specified type NEC Q64.19 — Other exstrophy of urinary bladder
- supravesical fissure Q64.11 — Supravesical fissure of urinary bladder
- neck obstruction Q64.31 — Congenital bladder neck obstruction
- specified type NEC Q64.79 — Other congenital malformations of bladder and urethra
Common questions about bladder anomaly ICD-10 codes
What is the ICD-10 code for bladder anomaly?
- Q64.70 — Unspecified congenital malformation of bladder and urethra. More specific codes apply when the documentation supports them: Q64.5, Q64.6, Q64.10, Q64.12 and others below.
What is the ICD-10 code for absence bladder anomaly?
- Q64.5 — Congenital absence of bladder and urethra.
What is the ICD-10 code for diverticulum bladder anomaly?
- Q64.6 — Congenital diverticulum of bladder.
What is the ICD-10 code for exstrophy bladder anomaly?
- Q64.10 — Exstrophy of urinary bladder, unspecified.
What is the ICD-10 code for neck obstruction bladder anomaly?
- Q64.31 — Congenital bladder neck obstruction.
Is Q64.70 billable?
- Yes. Q64.70 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q64.70 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q64.70 as a principal diagnosis.
Is Q64.70 a CC or MCC?
- No. Q64.70 is neither a CC nor an MCC under MS-DRG v44.0.