Is G80 a billable ICD-10-CM code?

No. G80 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does G80 sit in the tabular list?

Diseases of the nervous system (G00-G99), in the block Cerebral palsy and other paralytic syndromes (G80-G83).

What cannot be coded together with G80?

G80 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

G80

G80 — Cerebral palsy

Non-billable headerICD-10-CM

G80 is a non-billable header ICD-10-CM code for cerebral palsy. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

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

hereditary spastic paraplegia (G11.4)

Other codes that can never be billed with G80

These codes carry an Excludes1 note pointing at G80. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading G80 alone.

G81Hemiplegia and hemiparesis
G82Paraplegia (paraparesis) and quadriplegia (quadriparesis)

Risk adjustment

G80 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.

Code to one of these instead G80

7 child codes. Green means billable.

Questions about G80

Is G80 a billable ICD-10-CM code?: No. G80 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does G80 sit in the tabular list?: Diseases of the nervous system (G00-G99), in the block Cerebral palsy and other paralytic syndromes (G80-G83).
What cannot be coded together with G80?: G80 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.