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Ch. 8: Diseases of the ear and mastoid process (H60-H95)
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Diseases of middle ear and mastoid (H65-H75)
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H70 Mastoiditis and related conditions
› H70.1
H70.1
Chronic mastoiditis
ICD-10-CM category (non-billable header) code — part of Diseases of middle ear and mastoid (H65-H75)
Code Details
Billable
No — use a more specific child code
Chapter
Chapter 8: Diseases of the ear and mastoid process (H60-H95)
Section
Diseases of middle ear and mastoid (H65-H75)
Parent code
H70 — Mastoiditis and related conditions
Coding Notes
Inclusion Terms
Caries of mastoid
Fistula of mastoid
Excludes1 (never code both together)
tuberculous mastoiditis (A18.03)
Subcategories (4)
H70.10
Chronic mastoiditis, unspecified ear
H70.11
Chronic mastoiditis, right ear
H70.12
Chronic mastoiditis, left ear
H70.13
Chronic mastoiditis, bilateral
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