Is H66.3X9 a billable ICD-10-CM code?

Yes. H66.3X9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does H66.3X9 sit in the tabular list?

Diseases of the ear and mastoid process (H60-H95), in the block Diseases of middle ear and mastoid (H65-H75).

What cannot be coded together with H66.3X9?

H66.3X9 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 H66.3X9 (H66.3) and apply to it just the same.

H66.3X9

H66.3X9 — Other chronic suppurative otitis media, unspecified ear

Billable / specific codeICD-10-CMunspecified

H66.3X9 is a billable, specific ICD-10-CM code for other chronic suppurative otitis media, unspecified ear. It is valid for submission on a claim.

Excludes1 inherited from the categories above H66.3X9

These are not written on H66.3X9, but they bind it: a note on a category applies to every code beneath it. Billing H66.3X9 with anything listed here is a denial.

Written on H66.3 — Other chronic suppurative otitis media

tuberculous otitis media (A18.6)

Risk adjustment

H66.3X9 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 history

H66.3X9 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 H66.3X. If H66.3X9 is not quite right, the correct code is usually one of these.

Questions about H66.3X9

Is H66.3X9 a billable ICD-10-CM code?: Yes. H66.3X9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does H66.3X9 sit in the tabular list?: Diseases of the ear and mastoid process (H60-H95), in the block Diseases of middle ear and mastoid (H65-H75).
What cannot be coded together with H66.3X9?: H66.3X9 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 H66.3X9 (H66.3) and apply to it just the same.