H70.01
Non-billableSubperiosteal abscess of mastoid
H70.01 is the ICD-10-CM code for Subperiosteal abscess of mastoid. It is a non-billable category code — use a more specific child code such as H70.011 for billing.
H60-H95 Diseases of the ear and mastoid process
What this means — in plain language
MedlinePlus · NIHAn abscess is a pocket of pus. You can get an abscess almost anywhere in your body. When an area of your body becomes infected, your body's immune system tries to fight the infection. White blood cells go to the infected area, collect within the damaged tissue, and cause inflammation. During this process, pus forms. Pus is a mixture of living and dead white blood cells, germs, and dead tissue. Bacteria, viruses,…
Read more about Abscess at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
Look up another ICD-10 code or condition