Is G00.0 a billable ICD-10-CM code?

Yes. G00.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does G00.0 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 G00.0?

G00.0 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above G00.0 (G00) and apply to it just the same.

G00.0

G00.0 — Hemophilus meningitis

Billable / specific codeICD-10-CM

G00.0 is a billable, specific ICD-10-CM code for hemophilus meningitis. It is valid for submission on a claim.

Inclusion terms

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

Meningitis due to Hemophilus influenzae

Excludes1 inherited from the categories above G00.0

These are not written on G00.0, but they bind it: a note on a category applies to every code beneath it. Billing G00.0 with anything listed here is a denial.

Written on G00 — Bacterial meningitis, not elsewhere classified

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

Risk adjustment

G00.0 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

G00.0 is named in 8 Medicare coverage policies — 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56551Billing and Coding: Visual Fields Testing
A56799Billing and Coding: Visual Fields Testing
A57204Billing and Coding: MRI and CT Scans of the Head and Neck
A57206Billing and Coding: Lumbar MRI

How G00.0 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 G00.0.

Meningitis›H. influenzae
Meningitis›Haemophilus(influenzae)
Meningitis›influenzal(H. influenzae)
Meningoencephalitis›influenzal(H. influenzae)
Meningitis›bacterial›H. influenzae
Meningoencephalitis›in›H. influenzae
Meningoencephalitis›in›Hemophilus influenzae(H. influenzae)

Code history

G00.0 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share G00. If G00.0 is not quite right, the correct code is usually one of these.

Questions about G00.0

Is G00.0 a billable ICD-10-CM code?: Yes. G00.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does G00.0 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 G00.0?: G00.0 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above G00.0 (G00) and apply to it just the same.