Get started free

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

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)

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.

Get started freeSee how Eleplan works →