H74.9 is the ICD-10 code for Disorder of middle ear and mastoid, unspecified. It is a four-character subcategory of H74 (Other disorders of middle ear and mastoid), the most specific level in the WHO edition. It belongs to the block H65–H75 (Diseases of middle ear and mastoid) in Chapter VIII, Diseases of the ear and mastoid process.
- Code type
- Subcategory (4 characters)
- Chapter
- VIII · H60–H95
- Classification
- WHO ICD-10, 2019 version
H74.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
H74.9Sjukdom i mellanörat och mastoidutskottet, ospecificerad
H74.9Uspesifisert lidelse i mellomøre eller ørebensknute
DH749Sygdom i mellemøre eller processus mastoideus UNS
H74.9Määrittämätön välikorvan ja/tai kartiolisäkkeen sairaus
H74.9Krankheit des Mittelohres und des Warzenfortsatzes, nicht näher bezeichnet
H74.9Affection de l'oreille moyenne et de l'apophyse mastoïde, sans précision
H74.9aandoening van middenoor en mastoïd, niet-gespecificeerd
Listed through more specific codes:
- H74.90Unspecified disorder of middle ear and mastoid, unspecified ear
- H74.91Unspecified disorder of right middle ear and mastoid
- H74.92Unspecified disorder of left middle ear and mastoid
- H74.93Unspecified disorder of middle ear and mastoid, bilateral
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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