H66.91

Otitis media, unspecified, right ear

Billable code

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

Inherited from H66.9Otitis media, unspecified

Use additional

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

Synonyms

Otitis media NOS Acute otitis media NOS Chronic otitis media NOS

Inherited from H66Suppurative and unspecified otitis media

Includes

suppurative and unspecified otitis media with myringitis

Use additional

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)

Inherited from chapter 8Diseases of the ear and mastoid process

Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Note

Use an external cause code following the code for the ear condition, if applicable, to identify the cause of the ear condition

Official Guidelines for H66.91

FY 2026 ›

I.C.8Chapter-specific guidanceChapter 8: Diseases of the Ear and Mastoid Process (H60-H95)