H66.9

Non-billable

Otitis media, unspecified

H66.9 is the ICD-10-CM code for Otitis media, unspecified. It is a non-billable category code — use a more specific child code such as H66.90 for billing.

Status
Header (non-billable)
Chapter
H60-H95
Parent
H66
Subcodes
4
Edition
FY2026

H60-H95 Diseases of the ear and mastoid process

Includes

  • Otitis media NOS
  • Acute otitis media NOS
  • Chronic otitis media NOS

Use additional code

  • code for any associated perforated tympanic membrane (H72.-)

Frequently asked questions

What is ICD-10 code H66.9?
H66.9 is the ICD-10-CM code for "Otitis media, unspecified". It falls under H60-H95 Diseases of the ear and mastoid process.
Is H66.9 a billable code?
No — H66.9 is a non-billable header code. Use a more specific child code (such as H66.90) for billing.
What are the subcodes of H66.9?
H66.9 has 4 more specific child codes, including H66.90, H66.91, H66.92.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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