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Q04.6

Congenital cerebral cysts

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 3 never code together
Q04code
Excludes1
Q04.6code
Excludes1

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Instructional notes 2
Q04.6code
Inclusion terms
  • Porencephaly
  • Schizencephaly
Index entries leading here 4
  • Cyst (colloid) (mucous) (simple) (retention)
    • arachnoid, brain (acquired) G93.0
    • brain (acquired) G93.0
      • congenital Q04.6
      • third ventricle (colloid) , congenital Q04.6
    • choroid plexus G93.0
    • paraphysis, cerebri, congenital Q04.6
    • porencephalic Q04.6
  • Degeneration, degenerative
  • Porencephaly (congenital) (developmental) (true) Q04.6
  • Schizencephaly Q04.6
Alongside this code 8 same parent — Q04
Q04.0 Congenital malformations of corpus callosum Q04.1 Arhinencephaly Q04.2 Holoprosencephaly Q04.3 Other reduction deformities of brain Q04.4 Septo-optic dysplasia of brain Q04.5 Megalencephaly Q04.8 Other specified congenital malformations of brain Q04.9 Congenital malformation of brain, unspecified
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC72 CMS28HCC182 ESRD21HCC72 ESRD24HCC72 RX08HCC155

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2026
Parent
Q04
Block
Q00-Q07
Siblings
8

Present FY2024–FY2027.