Is G00 a billable ICD-10-CM code?

No. G00 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does G00 sit in the tabular list?

Diseases of the nervous system (G00-G99), in the block Inflammatory diseases of the central nervous system (G00-G09).

What cannot be coded together with G00?

G00 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

G00

G00 — Bacterial meningitis, not elsewhere classified

Non-billable headerICD-10-CM

G00 is a non-billable header ICD-10-CM code for bacterial meningitis, not elsewhere classified. 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.

bacterial meningoencephalitis (G04.2)
bacterial meningomyelitis (G04.2)

Includes

Conditions this code covers.

bacterial arachnoiditis
bacterial leptomeningitis
bacterial meningitis
bacterial pachymeningitis

Risk adjustment

G00 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 G00

6 child codes. Green means billable.

Questions about G00

Is G00 a billable ICD-10-CM code?: No. G00 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does G00 sit in the tabular list?: Diseases of the nervous system (G00-G99), in the block Inflammatory diseases of the central nervous system (G00-G09).
What cannot be coded together with G00?: G00 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.