Get started free

H70.8

Non-billable

Other mastoiditis and related conditions

H70.8 is the ICD-10-CM code for Other mastoiditis and related conditions. It is a non-billable category code — use a more specific child code such as H70.81 for billing.

Status
Header (non-billable)
Chapter
H60-H95
Parent
H70
Subcodes
2
Edition
FY2026

H60-H95 Diseases of the ear and mastoid process

Excludes1 — not coded here

  • •preauricular sinus and cyst (Q18.1)
  • •sinus, fistula, and cyst of branchial cleft (Q18.0)

Frequently asked questions

What is ICD-10 code H70.8?
H70.8 is the ICD-10-CM code for "Other mastoiditis and related conditions". It falls under H60-H95 Diseases of the ear and mastoid process.
Is H70.8 a billable code?
No — H70.8 is a non-billable header code. Use a more specific child code (such as H70.81) for billing.
What are the subcodes of H70.8?
H70.8 has 2 more specific child codes, including H70.81, H70.89.
What is excluded from H70.8?
Excludes1 (not coded here): preauricular sinus and cyst (Q18.1); sinus, fistula, and cyst of branchial cleft (Q18.0).

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

Powered by Eleplan

Free ICD-10 lookup is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, with Ellie, your AI care assistant, on top of it. Free to start.

Get started freeSee how Eleplan works →