ICD-10-CM > H60-H95 > H90-H94 > H91 > H91.9 H91.9 Unspecified hearing loss Non-Billable/Non-Specific Applicable To Deafness NOSHigh frequency deafnessLow frequency deafness Codes H91.90Unspecified hearing loss, unspecified earH91.91Unspecified hearing loss, right earH91.92Unspecified hearing loss, left earH91.93Unspecified hearing loss, bilateral