ICD-10-CM › H60-H95 › H65-H75 › H74.31 Ankylosis of ear ossicles › H74.313
Ankylosis of ear ossicles, bilateral
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Ankylosis of ear ossicles, bilateral
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from H74 Other disorders of middle ear mastoid
Excludes2 - not included here
- mastoiditis (H70.-)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Fused
- Change > joint
- Mushrooming hip
- Union, abnormal
- Fixation > joint
- Fixation > stapes
- Change > hip joint
- Bony block of joint
- Arthrofibrosis, joint
- Fusion, fused > joint
- Caries > ossicles, ear
- Derangement > shoulder
- Segmentation, incomplete
- Adhesions, adhesive > joint
- Disorder > joint > stiffness
- Disorder > joint > derangement
- Failure, failed > segmentation
- Ankylosis > incostapedial joint
- Derangement > joint > ankylosis
- Stiffness, joint NEC > ankylosis
- Disorder > ear > middle > ossicle
- Necrosis, necrotic > ossicles, ear
- Impaired, impairment > mobility > ear ossicles
- Abnormal, abnormality, abnormalities > ear ossicles, acquired NEC > ankylosis
- Ankylosis > ear ossicles
Codes in the same group
| Code | Description | Status |
|---|---|---|
| H74.311 | Ankylosis of ear ossicles, right ear | Valid |
| H74.312 | Ankylosis of ear ossicles, left ear | Valid |
| H74.319 | Ankylosis of ear ossicles, unspecified ear | Valid |