H66

Non-billable

Suppurative and unspecified otitis media

H66 is the ICD-10-CM code for Suppurative and unspecified otitis media. It is a non-billable category code — use a more specific child code such as H66.0 for billing.

Status
Header (non-billable)
Chapter
H60-H95
Subcodes
6
Edition
FY2026

H60-H95 Diseases of the ear and mastoid process

What this means — in plain language

MedlinePlus · NIH

Ear infections are the most common reason parents bring their child to a doctor. Three out of four children will have at least one ear infection by their third birthday. Adults can also get ear infections, but they are less common. The infection usually affects the middle ear and is called otitis media. The tubes inside the ears become clogged with fluid and mucus. This can affect hearing, because sound cannot get…

Read more about Ear Infections at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Includes

  • suppurative and unspecified otitis media with myringitis

Use additional code

  • code to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • exposure to tobacco smoke in the perinatal period (P96.81)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Conditions mapped to this code

MedlinePlus · NIH

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Frequently asked questions

What is ICD-10 code H66?
H66 is the ICD-10-CM code for "Suppurative and unspecified otitis media". It falls under H60-H95 Diseases of the ear and mastoid process.
Is H66 a billable code?
No — H66 is a non-billable header code. Use a more specific child code (such as H66.0) for billing.
What are the subcodes of H66?
H66 has 6 more specific child codes, including H66.0, H66.1, H66.2.

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.