ICD-10-CM · Chapter 8 · H60-H95
H74 Other disorders of middle ear mastoid
Excludes 2 (not included here)
- mastoiditis (H70.-)
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| H74..0 | Tympanosclerosis | No |
| H74..01 | Tympanosclerosis, right ear | Yes |
| H74..02 | Tympanosclerosis, left ear | Yes |
| H74..03 | Tympanosclerosis, bilateral | Yes |
| H74..09 | Tympanosclerosis, unspecified ear | Yes |
| H74..1 | Adhesive middle ear disease | No |
| H74..11 | Adhesive right middle ear disease | Yes |
| H74..12 | Adhesive left middle ear disease | Yes |
| H74..13 | Adhesive middle ear disease, bilateral | Yes |
| H74..19 | Adhesive middle ear disease, unspecified ear | Yes |
| H74..2 | Discontinuity and dislocation of ear ossicles | No |
| H74..20 | Discontinuity and dislocation of ear ossicles, unspecified ear | Yes |
| H74..21 | Discontinuity and dislocation of right ear ossicles | Yes |
| H74..22 | Discontinuity and dislocation of left ear ossicles | Yes |
| H74..23 | Discontinuity and dislocation of ear ossicles, bilateral | Yes |
| H74..3 | Other acquired abnormalities of ear ossicles | No |
| H74..31 | Ankylosis of ear ossicles | No |
| H74..311 | Ankylosis of ear ossicles, right ear | Yes |
| H74..312 | Ankylosis of ear ossicles, left ear | Yes |
| H74..313 | Ankylosis of ear ossicles, bilateral | Yes |
| H74..319 | Ankylosis of ear ossicles, unspecified ear | Yes |
| H74..32 | Partial loss of ear ossicles | No |
| H74..321 | Partial loss of ear ossicles, right ear | Yes |
| H74..322 | Partial loss of ear ossicles, left ear | Yes |
| H74..323 | Partial loss of ear ossicles, bilateral | Yes |
| H74..329 | Partial loss of ear ossicles, unspecified ear | Yes |
| H74..39 | Other acquired abnormalities of ear ossicles | No |
| H74..391 | Other acquired abnormalities of right ear ossicles | Yes |
| H74..392 | Other acquired abnormalities of left ear ossicles | Yes |
| H74..393 | Other acquired abnormalities of ear ossicles, bilateral | Yes |
| H74..399 | Other acquired abnormalities of ear ossicles, unspecified ear | Yes |
| H74..4 | Polyp of middle ear | No |
| H74..40 | Polyp of middle ear, unspecified ear | Yes |
| H74..41 | Polyp of right middle ear | Yes |
| H74..42 | Polyp of left middle ear | Yes |
| H74..43 | Polyp of middle ear, bilateral | Yes |
| H74..8 | Other specified disorders of middle ear and mastoid | No |
| H74..8X | Other specified disorders of middle ear and mastoid | No |
| H74..8X1 | Other specified disorders of right middle ear and mastoid | Yes |
| H74..8X2 | Other specified disorders of left middle ear and mastoid | Yes |
| H74..8X3 | Other specified disorders of middle ear and mastoid, bilateral | Yes |
| H74..8X9 | Other specified disorders of middle ear and mastoid, unspecified ear | Yes |
| H74..9 | Unspecified disorder of middle ear and mastoid | No |
| H74..90 | Unspecified disorder of middle ear and mastoid, unspecified ear | Yes |
| H74..91 | Unspecified disorder of right middle ear and mastoid | Yes |
| H74..92 | Unspecified disorder of left middle ear and mastoid | Yes |
| H74..93 | Unspecified disorder of middle ear and mastoid, bilateral | Yes |
Last reviewed: September 2026