MCMCB Pro
H74.399

H74.399Other acquired abnormalities of ear ossicles, unspecified ear

Billable / specific codeICD-10-CMunspecified

H74.399 is a billable, specific ICD-10-CM code for other acquired abnormalities of ear ossicles, unspecified ear. It is valid for submission on a claim.

Risk adjustment

H74.399 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.

Related codes at this level

Codes that share H74.39. If H74.399 is not quite right, the correct code is usually one of these.

Questions about H74.399

Is H74.399 a billable ICD-10-CM code?
Yes. H74.399 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does H74.399 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).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.