2026 ICD-10-CM Diagnosis Code Q64.6Congenital diverticulum of bladder

ICD-10-CM Codes›Q00-Q99›Q60-Q64›Q64

ICD-10-CM Q64.6
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q64.6 is a billable ICD-10-CM diagnosis code for congenital diverticulum of bladder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 698 through 700. The code is exempt from POA reporting. Coders also document this condition as congenital diverticulum of urinary bladder. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Genitourinary congenital anomalies.

Code Identity

ICD-10-CM Code
Q64.6
Billable Status
Yes — Valid for Submission
Code Describes
Congenital diverticulum of bladder
Short Description
Congenital diverticulum of bladder
Same as the full description in the CMS dataset.
Parent Code
Q64
Other congenital malformations of urinary system

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ60-Q64Congenital malformations of the urinary system
CategoryQ64Other congenital malformations of urinary system
This CodeQ64.6Congenital diverticulum of bladder

Present on Admission (POA)Billing

Q64.6 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Congenital diverticulum of urinary bladder
  • Diverticulum of urinary bladder
  • Hutch diverticulum

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Anomaly, anomalous(congenital) (unspecified type)
      • bladder
        • diverticulum
    • Diverticulum, diverticula(multiple)
      • bladder (sphincter)
        • congenital
    • Diverticulum, diverticula(multiple)
      • vesical
        • congenital
    • Malformation(congenital)
      • bladder
        • diverticulum

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MAL003
Genitourinary congenital anomalies
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Hutch Diverticulum

    a congenital out pouching of the bladder involving the ureteral hiatus.

Patient EducationClinical

Bladder Diseases

The bladder is a hollow organ in your lower abdomen that stores urine. Many conditions can affect your bladder. Some common ones are:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Q64.6 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
753.8 Cystourethral anom NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Q64.6Overview

Is Q64.6 (Other congenital malformations of urinary system) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report congenital diverticulum of bladder on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does Q64.6 group to?

When congenital diverticulum of bladder is the principal diagnosis on an inpatient stay, it groups to MS-DRG 698, 699, 700, with relative weights from 0.6899 to 1.6544 depending on complications. Higher weights mean higher Medicare reimbursement.

Is Q64.6 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for congenital diverticulum of bladder on inpatient claims.

What is the ICD-9 equivalent of Q64.6?

Under the General Equivalence Mappings, congenital diverticulum of bladder converts to ICD-9-CM 753.8 (cystourethral anom NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.