C30.1
Middle ear
Coding guidance (WHO 2019)
Eustachian tube Inner ear Mastoid air cells Excl.: auricular canal (external) (C43.2, C44.2) bone of ear (meatus) (C41.0) cartilage of ear (C49.0) skin of (external) ear (C43.2, C44.2)
Eustachian tube Inner ear Mastoid air cells Excl.: auricular canal (external) (C43.2, C44.2) bone of ear (meatus) (C41.0) cartilage of ear (C49.0) skin of (external) ear (C43.2, C44.2)