H91.9
ICD-10Non-billable categoryUnspecified hearing loss
Official ICD-10-CM descriptor (FY2026)
Unspecified hearing loss
H91.9 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Inclusion terms
- Deafness NOS
- High frequency deafness
- Low frequency deafness
ICD-10-CM FY2026 defines 4 codes beneath H91.9. See the ICD-10-CM index for what this site publishes.
Related codes in H91
Where this code sits
- Parent code
- H91
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.