H74.39Other acquired abnormalities of ear ossicles

H74.39 is the ICD-10-CM diagnosis code for other acquired abnormalities of ear ossicles. It belongs to category H74 (other disorders of middle ear mastoid), block H65-H75 (diseases of middle ear and mastoid) and chapter 8 (diseases of the ear and mastoid process). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within H74.3, choose H74.39 (Other acquired abnormalities of ear ossicles) only when documentation doesn't support a more specific option: ankylosis of ear ossicles (H74.31) and partial loss of ear ossicles (H74.32).

To report this condition, pick the subcode that matches the documentation: H74.391 (ossicles), H74.392 (ossicles), H74.393 (bilateral) and H74.399 (unspecified ear).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.