| ICD-10 Code | Description |
| H61.301 | Acquired stenosis of right external ear canal, unspecified |
| H61.302 | Acquired stenosis of left external ear canal, unspecified |
| H61.303 | Acquired stenosis of external ear canal, unspecified, bilateral |
| H61.309 | Acquired stenosis of external ear canal, unspecified, unspecified ear |
| H61.311 | Acquired stenosis of right external ear canal secondary to trauma |
| H61.312 | Acquired stenosis of left external ear canal secondary to trauma |
| H61.313 | Acquired stenosis of external ear canal secondary to trauma, bilateral |
| H61.319 | Acquired stenosis of external ear canal secondary to trauma, unspecified ear |
| H61.321 | Acquired stenosis of right external ear canal secondary to inflammation and infection |
| H61.322 | Acquired stenosis of left external ear canal secondary to inflammation and infection |
| H61.323 | Acquired stenosis of external ear canal secondary to inflammation and infection, bilateral |
| H61.329 | Acquired stenosis of external ear canal secondary to inflammation and infection, unspecified ear |
| H61.391 | Other acquired stenosis of right external ear canal |
| H61.392 | Other acquired stenosis of left external ear canal |
| H61.393 | Other acquired stenosis of external ear canal, bilateral |
| H61.399 | Other acquired stenosis of external ear canal, unspecified ear |
