ICD-10 Code H93.012 – Transient ischemic deafness, left ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H93.012 – Transient ischemic deafness, left ear
What it is
This code identifies a temporary loss of hearing in the left ear due to reduced blood flow. It describes an ischemic event affecting hearing, not chronic deafness or simple ear fullness.
Clinical signs
Documented findings may include sudden, transient unilateral hearing loss, often with return of hearing. Clinical features vary; refer to documentation for associated tinnitus, dizziness, or other ear symptoms.
When to use this code
Use H93.012 when the record specifically states transient ischemic deafness in the left ear. Apply it when the clinician links the hearing change to ischemia and identifies the affected side. Check documentation if the cause, side, or transient nature is unclear.
Do not use for
Do not use this code for permanent hearing loss, nonspecific hearing impairment, or deafness without an ischemic cause. Do not assign it when the laterality is not documented.
Coding tip
Verify both the ischemic cause and the left-ear laterality in the chart before assigning H93.012.