H61.302Acquired stenosis of left external ear canal, unspecified

H61.302 is the ICD-10-CM diagnosis code for acquired stenosis of left external ear canal, unspecified. It belongs to category H61 (other disorders of external ear), block H60-H62 (diseases of external ear) and chapter 8 (diseases of the ear and mastoid process). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within H61.30, choose H61.302 (left external ear canal, unspecified) only when documentation doesn't support a more specific option: right external ear canal, unspecified (H61.301), bilateral (H61.303) and unspecified ear (H61.309).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 154 (Other Ear, Nose, Mouth and Throat Diagnoses with MCC, relative weight 1.5921), DRG 155 (Other Ear, Nose, Mouth and Throat Diagnoses with CC, relative weight 0.9322) and DRG 156 (Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC, relative weight 0.6659), in MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

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

Before ICD-10, this condition was coded in ICD-9-CM as 380.50 (acquired stenosis of external ear canal, unspecified as to cause).