H70.012
✓ BillableSubperiosteal abscess of mastoid, left ear
Diseases of the ear and mastoid process (H60-H95)
Clinical Description
ICD-10-CM code H70.012 represents subperiosteal abscess of mastoid, left ear. This code falls under the Diseases of the ear and mastoid process (H60-H95) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 7-character code at the 6th level of specificity. This is the most specific code available in this subcategory.
Frequently Asked Questions
What is ICD-10 code H70.012?
ICD-10-CM code H70.012 is "Subperiosteal abscess of mastoid, left ear". It belongs to the category: Diseases of the ear and mastoid process (H60-H95).
Is H70.012 a billable ICD-10 code?
Yes, H70.012 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Related Codes in H70.01
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)