Is G93.0 a billable ICD-10-CM code?

Yes. G93.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does G93.0 sit in the tabular list?

Diseases of the nervous system (G00-G99), in the block Other disorders of the nervous system (G89-G99).

What cannot be coded together with G93.0?

G93.0 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

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.

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

These codes carry an Excludes1 note pointing at G93.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading G93.0 alone.

Q04.6Congenital cerebral cysts

Risk adjustment

G93.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

G93.0 is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

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

How G93.0 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to G93.0.

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

Related codes at this level

Codes that share G93. If G93.0 is not quite right, the correct code is usually one of these.

Questions about G93.0

Is G93.0 a billable ICD-10-CM code?: Yes. G93.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does G93.0 sit in the tabular list?: Diseases of the nervous system (G00-G99), in the block Other disorders of the nervous system (G89-G99).
What cannot be coded together with G93.0?: G93.0 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.