Is J01.00 a billable ICD-10-CM code?

Yes. J01.00 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does J01.00 sit in the tabular list?

Diseases of the respiratory system (J00-J99), in the block Acute upper respiratory infections (J00-J06).

What cannot be coded together with J01.00?

J01.00 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 J01.00 (J01) and apply to it just the same.

J01.00

J01.00 — Acute maxillary sinusitis, unspecified

Billable / specific codeICD-10-CM

J01.00 is a billable, specific ICD-10-CM code for acute maxillary sinusitis, unspecified. It is valid for submission on a claim.

Excludes1 inherited from the categories above J01.00

These are not written on J01.00, but they bind it: a note on a category applies to every code beneath it. Billing J01.00 with anything listed here is a denial.

Written on J01 — Acute sinusitis

sinusitis NOS (J32.9)

Excludes2 inherited from the categories above J01.00

Also inherited, and the opposite of Excludes1: these conditions are not part of J01.00, but a patient can have both, so you may code both.

Written on J01 — Acute sinusitis

chronic sinusitis (J32.0-J32.8)

Risk adjustment

J01.00 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

J01.00 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.

A57204Billing and Coding: MRI and CT Scans of the Head and Neck
A57473Billing and Coding: Allergy Testing
A57473Billing and Coding: Allergy Testing

How J01.00 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 J01.00.

Antritis›maxilla›acute
Sinusitis›acute›maxillary
Sinusitis›maxillary›acute

Code history

J01.00 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 J01.0. If J01.00 is not quite right, the correct code is usually one of these.

J01.01Acute recurrent maxillary sinusitis

Questions about J01.00

Is J01.00 a billable ICD-10-CM code?: Yes. J01.00 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does J01.00 sit in the tabular list?: Diseases of the respiratory system (J00-J99), in the block Acute upper respiratory infections (J00-J06).
What cannot be coded together with J01.00?: J01.00 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 J01.00 (J01) and apply to it just the same.