ICD-10-CM 2027
ICD-10 code for hearing aid fitting
From the official ICD-10-CM alphabetic index entry “Fitting (and adjustment) (of) › hearing aid”. Page updated September 29, 2026.
About coding hearing aid fitting
The ICD-10-CM code for hearing aid fitting is Z46.1 (Encounter for fitting and adjustment of hearing aid).
Within Z46 (encounter for fitting and adjustment of other devices), Z46.1 is specifically for encounter for fitting and adjustment of hearing aid. Related codes cover spectacles and contact lenses (Z46.0), related to nervous system and special senses (Z46.2), dental prosthetic device (Z46.3), orthodontic device (Z46.4), other gastrointestinal appliance and device (Z46.5), urinary device (Z46.6), other specified devices (Z46.8) and unspecified device (Z46.9).
Don't report Z46.1 together with the conditions in its Excludes1 note: encounter for adjustment and management of implanted hearing device (Z45.32-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for Z46.1)
- encounter for adjustment and management of implanted hearing device (Z45.32-)
Common questions about hearing aid fitting ICD-10 codes
What is the ICD-10 code for hearing aid fitting?
- Z46.1 — Encounter for fitting and adjustment of hearing aid.
Is Z46.1 billable?
- Yes. Z46.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z46.1 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z46.1 a CC or MCC?
- No. Z46.1 is neither a CC nor an MCC under MS-DRG v44.0.