H66.9

Non-Billable

ChapterH60–H95

Ranksubcategory

Official Description

Otitis media, unspecified

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 8: Diseases of the Ear and Mastoid Process (H60-H95).

Instructional Notes

Includes

Otitis media NOS
Acute otitis media NOS
Chronic otitis media NOS

Use Additional Code

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

General instructions are available for the parent sections:

View CH8 Notes View H66 Notes

Clinical Hierarchy

CH8Diseases of the ear and mastoid process (H60-H95)

H65-H75Diseases of middle ear and mastoid (H65-H75)

H66Suppurative and unspecified otitis media

H66.9Otitis media, unspecified

H66.90Otitis media, unspecified, unspecified ear

H66.91Otitis media, unspecified, right ear

H66.92Otitis media, unspecified, left ear

H66.93Otitis media, unspecified, bilateral

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to H66.9:

categoryH66

Suppurative and unspecified otitis media

View context instructions

chapterCH8

Diseases of the ear and mastoid process (H60-H95)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to H66.9. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

4 raw paths

Otitis (acute)4 unique routes

Direct index entry→H66.9

media (hemorrhagic) (staphylococcal) (streptococcal)→H66.9(3 variants)

acute, subacute→H66.9

chronic→H66.9

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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