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383.9 - Unspecified Mastoiditis


The ICD 9 Code for Unspecified mastoiditis is listed as 383.9.
Additional information concerning this code and description can be found below including ICD 10 crosswalks / GEMS, and chapter information where available.
ICD 9 CM Field Value
Diagnosis Code: 383.9
Long Description: Unspecified mastoiditis
Short Description: Mastoiditis NOS
Chapter: Diseases Of The Nervous System And Sense Organs
Block: Diseases Of The Ear And Mastoid Process (380-389)
ICD-10-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD-10-CM Code: H70.90 - Unspecified mastoiditis, unspecified ear (approximate)
ICD-9-CM Siblings (same level / similar specificity) of 383.9:
383.1 - Chronic mastoiditis