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ICD-10-CM tabular list

H65-H75Diseases of middle ear and mastoid

ICD-10-CM codes H65-H75 cover diseases of middle ear and mastoid, within diseases of the ear and mastoid process. The block holds 380 codes across 11 categories, of which 288 are billable and 92 are header codes that cannot be submitted on a claim.

What else to watch in H65-H75

  • 144 codes are laterality-specific. They come in left and right pairs, and the pair is mutually exclusive on a single site: coding both without a bilateral code is a contradiction a scrubber should catch before the payer does.
  • 224 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.

Categories in H65-H75

ICD-10-CMFY2026-Apr· effective April 1, 2026