Is H66.40 a billable ICD-10-CM code?

Yes. H66.40 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does H66.40 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).

H66.40

H66.40 — Suppurative otitis media, unspecified, unspecified ear

Billable / specific codeICD-10-CMunspecified

H66.40 is a billable, specific ICD-10-CM code for suppurative otitis media, unspecified, unspecified ear. It is valid for submission on a claim.

Risk adjustment

H66.40 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.

How H66.40 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 H66.40.

Encephalitis›otitic NEC

Related codes at this level

Codes that share H66.4. If H66.40 is not quite right, the correct code is usually one of these.

Questions about H66.40

Is H66.40 a billable ICD-10-CM code?: Yes. H66.40 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does H66.40 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).