H66 vs H73.0

H66 (Suppurative and unspecified otitis media) compared with H73.0 (Acute myringitis), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.

Can these codes be reported together?

No — do not report together. H73.0 carries an Excludes1 note covering H66: “acute myringitis with otitis media (H65, H66)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Side by side

	H66Suppurative and unspecified otitis media	H73.0Acute myringitis
Billing status	Non-billable header Report instead: H66.001, H66.002, H66.003, H66.004, H66.005	Non-billable header Report instead: H73.001, H73.002, H73.003, H73.009, H73.011
Classification	H60-H95 — Diseases of the Ear and Mastoid Process (H60-H95)	H60-H95 — Diseases of the Ear and Mastoid Process (H60-H95)
Definition	Suppurative and unspecified otitis media is a non-billable ICD-10-CM category code (H66).	Acute myringitis is a non-billable ICD-10-CM category code (H73.0).
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)	—

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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources