MCMedicalCodingSoftware
G93.0

G93.0: Cerebral cysts

Billable / specific codeICD-10-CM

G93.0 is a billable, specific ICD-10-CM code for cerebral cysts. It is valid for submission on a claim.

Check G93.0 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • acquired periventricular cysts of newborn (P91.1)
  • congenital cerebral cysts (Q04.6)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Arachnoid cyst
  • Porencephalic cyst, acquired

Other codes that can never be billed with G93.0

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Q04.6Congenital cerebral cysts

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

G93.0 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56612Billing and Coding: CT of the Head
  • A56619Billing and Coding: Nerve Conduction Studies and Electromyography
  • A57204Billing and Coding: MRI and CT Scans of the Head and Neck

Alphabetic index entries that lead here

  • Cyst›arachnoid, brain(acquired)
  • Cyst›brain(acquired)
  • Cyst›choroid plexus
  • Cyst›corpora quadrigemina
  • Cyst›cranial meninges
  • Cyst›dura(cerebral)
  • Cyst›membrane, brain
  • Cyst›meninges(cerebral)
  • Cyst›subdural(cerebral)
  • Porencephaly›acquired
  • Porencephaly›nondevelopmental
  • Cyst›porencephalic›acquired

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under G93

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.