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    OpenPayerBilling CodesDiseases of middle ear and mastoidICD-10-CM h66-suppurative-and-unspecified-otitis-media
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    ICD-10-CM Code For Suppurative And Unspecified Otitis Media: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group H66 includes acute suppurative otitis media, chronic suppurative otitis media, and unspecified otitis media affecting the middle ear and mastoid. These ICD-10-CM diagnosis codes are used to document clinical presentations of ear infection with or without perforation, recurrent or chronic courses, and associated complications such as mastoiditis or hearing disturbance. Accurate coding within the ICD-10-CM H66 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM H66: Suppurative And Unspecified Otitis Media Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group H66 covers acute and chronic middle ear infections with pus and cases where the type is unspecified, affecting the middle ear and mastoid structures. These diagnoses target the middle ear space and related structures and represent inflammatory or infectious processes that can impact hearing and cause complications if untreated. Accurate coding ensures clinical encounters are documented correctly and supports appropriate reimbursement for services related to diagnosis and treatment.

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    When to Use

    Use a code from this group when a clinical diagnosis documents suppurative or unspecified otitis media as the primary ear condition being treated or evaluated. Select specific codes to reflect laterality, chronicity, perforation status, and any documented complications to support accurate coding and billing.

    ICD-10-CM Codes

    36 rows

    ICD-10-CM CodeDescription
    H66.001Acute suppurative otitis media without spontaneous rupture of ear drum, right ear
    H66.002Acute suppurative otitis media without spontaneous rupture of ear drum, left ear
    H66.003Acute suppurative otitis media without spontaneous rupture of ear drum, bilateral
    H66.004Acute suppurative otitis media without spontaneous rupture of ear drum, recurrent, right ear
    H66.005Acute suppurative otitis media without spontaneous rupture of ear drum, recurrent, left ear
    H66.006Acute suppurative otitis media without spontaneous rupture of ear drum, recurrent, bilateral
    H66.007Acute suppurative otitis media without spontaneous rupture of ear drum, recurrent, unspecified ear
    H66.009Acute suppurative otitis media without spontaneous rupture of ear drum, unspecified ear
    H66.011Acute suppurative otitis media with spontaneous rupture of ear drum, right ear
    H66.012Acute suppurative otitis media with spontaneous rupture of ear drum, left ear
    H66.013Acute suppurative otitis media with spontaneous rupture of ear drum, bilateral
    H66.014Acute suppurative otitis media with spontaneous rupture of ear drum, recurrent, right ear
    H66.015Acute suppurative otitis media with spontaneous rupture of ear drum, recurrent, left ear
    H66.016Acute suppurative otitis media with spontaneous rupture of ear drum, recurrent, bilateral
    H66.017Acute suppurative otitis media with spontaneous rupture of ear drum, recurrent, unspecified ear
    H66.019Acute suppurative otitis media with spontaneous rupture of ear drum, unspecified ear
    H66.10Chronic tubotympanic suppurative otitis media, unspecified
    H66.11Chronic tubotympanic suppurative otitis media, right ear
    H66.12Chronic tubotympanic suppurative otitis media, left ear
    H66.13Chronic tubotympanic suppurative otitis media, bilateral

    Showing 1–20 of 36

    DRG Codes

    2 rows

    DRG CodeDescription
    152Otitis Media and URI with MCC
    153Otitis Media and URI without MCC

    Typical Clinical Scenarios

    • A toddler presents to urgent care with a 24–48 hour history of fever, ear pain, irritability, and recent upper respiratory infection; otoscopic exam shows a bulging, erythematous tympanic membrane with purulent middle ear effusion, consistent with acute suppurative otitis media, prompting antimicrobial therapy and analgesia. Typical codes: H66.001, H66.002
    • An adult with diabetes and recurrent ear infections is seen in clinic for persistent ear fullness and intermittent purulent drainage despite prior treatment; exam and history suggest chronic suppurative otitis media with ongoing perforation and drainage requiring prolonged management and possible ENT referral. Typical codes: H66.40, H66.41, H66.42
    • A patient presents to the emergency department with severe ear pain and signs of surrounding mastoid tenderness and swelling after an inadequately treated middle ear infection; concern for acute mastoiditis as a complication leads to urgent imaging and inpatient care, and a suppurative middle ear diagnosis is assigned as the underlying process. Typical codes: H66.011, H66.012, H66.013

    Related Codes

    H65-NONSUPPURATIVE-OTITIS-MEDIA

    ICD-10-CM Code For Nonsuppurative Otitis Media: Group Overview

    H67-OTITIS-MEDIA-IN-DISEASES-CLASSIFIED-ELSEWHERE

    ICD-10-CM Code For Otitis Media In Diseases Classified Elsewhere: Group Overview

    H68-EUSTACHIAN-SALPINGITIS-AND-OBSTRUCTION

    ICD-10-CM Code For Eustachian Salpingitis And Obstruction: Group Overview

    H69-OTHER-AND-UNSPECIFIED-EUSTACHIAN-TUBE

    ICD-10-CM Code For Other And Unspecified Disorders Of Eustachian Tube: Group Overview

    H70-MASTOIDITIS-AND-RELATED-CONDITIONS

    ICD-10-CM Code For Mastoiditis And Related Conditions: Group Overview

    H71-CHOLESTEATOMA-OF-MIDDLE-EAR

    ICD-10-CM Code For Cholesteatoma Of Middle Ear: Group Overview

    H72-PERFORATION-OF-TYMPANIC-MEMBRANE

    ICD-10-CM Code For Perforation Of Tympanic Membrane: Group Overview

    H73-OTHER-DISORDERS-OF-TYMPANIC-MEMBRANE

    ICD-10-CM Code For Other Disorders Of Tympanic Membrane: Group Overview

    H74-OTHER-DISORDERS-MIDDLE-EAR-MASTOID

    ICD-10-CM Code For Other Disorders Of Middle Ear Mastoid: Group Overview

    H75-OTHER-MIDDLE-EAR-DISORDERS

    ICD-10-CM Code For Other Disorders Of Middle Ear And Mastoid In Diseases Classified Elsewhere: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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