H70.01
Non-Billable
ChapterH60–H95
Ranksubcategory
Official Description
Subperiosteal abscess of mastoid
Metadata & Insights
- •2026 ICD-10-CM Edition - Effective October 1, 2025.
- •Non-billable category (requires more specific sub-code).
- •Chapter 8: Diseases of the Ear and Mastoid Process (H60-H95).
General instructions are available for the parent sections:
Clinical Hierarchy
CH8Diseases of the ear and mastoid process (H60-H95)
H65-H75Diseases of middle ear and mastoid (H65-H75)
H70Mastoiditis and related conditions
H70.0Acute mastoiditis
H70.01Subperiosteal abscess of mastoid
H70.011Subperiosteal abscess of mastoid, right ear
H70.012Subperiosteal abscess of mastoid, left ear
H70.013Subperiosteal abscess of mastoid, bilateral
H70.019Subperiosteal abscess of mastoid, unspecified ear
Applicable Ancestor Context
The following parent sections contain instructions or notes that apply to H70.01:
Alphabetic Index Mentions
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MS-DRG Classification
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Cross Reference
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