ICD10BillableValid for clinical use

ICD-10 Code Q64.4: Malformation of urachus

Q64.4 is a billable ICD-10 diagnosis code used to classify Malformation of urachus in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0).

When is it used?

  • May be used when a clinician documents malformation of urachus in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
17Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0)
block
Q60-Q64Congenital malformations of the urinary system
category
Q64Other congenital malformations of urinary system
currentQ64

Official coding notes

Inclusion terms
  • Cyst of urachus
  • Patent urachus
  • Prolapse of urachus

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Coverage-related procedures and services

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
Q64.4

Common synonyms

Malformation of urachus

Frequently asked questions

Code details

CodeQ64.4
SystemICD10
Display nameMalformation of urachus
ChapterCongenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0)
BlockCongenital malformations of the urinary system

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Anomaly, anomalous(congenital) (unspecified type)Cyst(colloid) (mucous) (simple) (retention)Cyst(colloid) (mucous) (simple) (retention)DeformityDeformityFistula(cutaneous)PatentPersistence, persistent(congenital)Persistence, persistent(congenital)Prolapse, prolapsedRemnantSinus

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code Q64.4 for Malformation of urachus | HealthAssure