H70.9 is the ICD-10 code for Mastoiditis, unspecified. It is a four-character subcategory of H70 (Mastoiditis and related conditions), 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
H70.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
H70.9Uspesifisert mastoiditt
DH709Mastoiditis UNS
H70.9Määrittämätön kartiolisäkkeen tulehdus
H70.9Mastoiditis, nicht näher bezeichnet
H70.9Mastoïdite, sans précision
H70.9mastoïditis, niet-gespecificeerd
Listed through more specific codes:
- H70.90Unspecified mastoiditis, unspecified ear
- H70.91Unspecified mastoiditis, right ear
- H70.92Unspecified mastoiditis, left ear
- H70.93Unspecified mastoiditis, 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.
Look up another code
Stop looking codes up by hand
Docdemic listens to the consultation, writes the note and suggests the diagnosis and procedure codes that fit it, each one checked against your country’s official code list.
Try Docdemic free