Unilateral Hearing Loss is rated by the U.S. Department of Veterans Affairs under DC 6100 of 38 CFR § 4.85, DC 6100 across 4 severity tiers (0% / 10% / 20% / 30%). Service connection requires (1) a current diagnosis, (2) an in-service event, injury, or exposure, and (3) a medical nexus opinion linking the two under 38 C.F.R. § 3.303.
Diminished hearing acuity in one ear only. Unless the non-service-connected ear is also impaired to the point of deafness, the non-service-connected ear is assigned a Roman numeral designation of I for rating purposes.
Rating criteria reference 38 C.F.R. Part 4 (Schedule for Rating Disabilities). This entry has not yet undergone editorial review against the live regulation text — consult the authoritative source directly before relying on the criteria shown.