2021 ICD-10-CM Diagnosis Code Q64.4

Malformation of urachus

    2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
  • Q64.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM Q64.4 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of Q64.4 - other international versions of ICD-10 Q64.4 may differ.
Applicable To
  • Cyst of urachus
  • Patent urachus
  • Prolapse of urachus
The following code(s) above Q64.4 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Q64.4:
  • Q00-Q99
    2021 ICD-10-CM Range Q00-Q99

    Congenital malformations, deformations and chromosomal abnormalities

    Note
    • Codes from this chapter are not for use on maternal records
    Type 2 Excludes
    • inborn errors of metabolism (E70-E88)
    Congenital malformations, deformations and chromosomal abnormalities
Approximate Synonyms
  • Allantoic cyst
  • Congenital anomaly of urachus
  • Fistula of urachus
  • Patent urachus
  • Urachal cyst
Clinical Information
  • A congenital abnormality that results from the failure of the lumen of urachus to be obliterated. It presents with leakage of urine from the bladder through the umbilicus.
  • A cyst that develops from the remnants of the urachus.
  • Cyst occurring in a persistent portion of the urachus, presenting as an extraperitoneal mass in the umbilical region. It is characterized by abdominal pain, and fever if infected. It may rupture, leading to peritonitis, or it may drain through the umbilicus.
Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
  • Q64.4 is considered exempt from POA reporting.
ICD-10-CM Q64.4 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 698 Other kidney and urinary tract diagnoses with mcc
  • 699 Other kidney and urinary tract diagnoses with cc
  • 700 Other kidney and urinary tract diagnoses without cc/mcc

Convert Q64.4 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to Q64.4:
  • Anomaly, anomalous (congenital) (unspecified type) Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
    • urachus Q64.4
  • Cyst (colloid) (mucous) (simple) (retention)
    • allantoic Q64.4
    • urachus, congenital Q64.4
  • Deformity Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
    • urinary tract (congenital) Q64.9
      ICD-10-CM Diagnosis Code Q64.9

      Congenital malformation of urinary system, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
      Applicable To
      • Congenital anomaly NOS of urinary system
      • Congenital deformity NOS of urinary system
      • urachus Q64.4
    • urachus, congenital Q64.4
  • Fistula (cutaneous) L98.8
    ICD-10-CM Diagnosis Code L98.8

    Other specified disorders of the skin and subcutaneous tissue

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • urachus, congenital Q64.4
  • Patent - see also Imperfect, closure
    • urachus Q64.4
  • Persistence, persistent (congenital)
    • umbilical sinus Q64.4
    • urachus Q64.4
  • Prolapse, prolapsed
    • urachus, congenital Q64.4
  • Remnant
    • urachus Q64.4
  • Sinus - see also Fistula
    • urachus Q64.4
  • Urachus - see also condition
    • patent or persistent Q64.4

ICD-10-CM Codes Adjacent To Q64.4
Q64.10 …… unspecified
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
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
Q64.6 Congenital diverticulum of bladder
Q64.7 Other and unspecified congenital malformations of bladder and urethra
Q64.70 Unspecified congenital malformation of bladder and urethra
Q64.71 Congenital prolapse of urethra
Q64.72 Congenital prolapse of urinary meatus
Q64.73 Congenital urethrorectal fistula
Q64.74 Double urethra
Q64.75 Double urinary meatus
Q64.79 Other congenital malformations of bladder and urethra

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.