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    OpenPayerBilling CodesDiseases of middle ear and mastoidICD-10-CM h75-other-middle-ear-disorders
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    ICD-10-CM Code For Other Disorders Of Middle Ear And Mastoid In Diseases Classified Elsewhere: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group H75 includes disorders of the middle ear and mastoid that occur in the context of diseases classified elsewhere, such as infections or systemic conditions with ear involvement. These ICD-10-CM diagnosis codes are used to document complications or secondary involvement of the middle ear and mastoid, capturing disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM H75 group supports proper claim adjudication and complete clinical documentation for appropriate reimbursement.

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    ICD-10-CM H75: Other Disorders Of Middle Ear And Mastoid In Diseases Classified Elsewhere Overview

    This group covers middle ear and mastoid disorders that occur as manifestations of diseases classified in other parts of the International Classification of Diseases, 10th Revision, Clinical Modification. It targets the ear and adjacent mastoid structures and captures complications or related pathology secondary to systemic or other primary conditions. Accurate coding ensures the clinical picture is complete and supports appropriate reimbursement for treatment related to those underlying diseases.

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    When to Use

    Use codes from this group when the middle ear or mastoid disorder is explicitly documented as occurring in the context of another classified disease. Select the code that reflects the specific secondary ear condition and link it to the primary underlying diagnosis as appropriate.

    ICD-10-CM Codes

    8 rows

    ICD-10-CM CodeDescription
    H75.00Mastoiditis in infectious and parasitic diseases classified elsewhere, unspecified ear
    H75.01Mastoiditis in infectious and parasitic diseases classified elsewhere, right ear
    H75.02Mastoiditis in infectious and parasitic diseases classified elsewhere, left ear
    H75.03Mastoiditis in infectious and parasitic diseases classified elsewhere, bilateral
    H75.80Other specified disorders of middle ear and mastoid in diseases classified elsewhere, unspecified ear
    H75.81Other specified disorders of right middle ear and mastoid in diseases classified elsewhere
    H75.82Other specified disorders of left middle ear and mastoid in diseases classified elsewhere
    H75.83Other specified disorders of middle ear and mastoid in diseases classified elsewhere, bilateral

    DRG Codes

    3 rows

    DRG CodeDescription
    154Other Ear, Nose, Mouth and Throat Diagnoses with MCC
    155Other Ear, Nose, Mouth and Throat Diagnoses with CC
    156Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC

    Typical Clinical Scenarios

    • An adult patient presents to the emergency department with sudden onset of severe ear pain, purulent otorrhea, fever, and vertigo following a recent acute otitis media; otoscopic exam shows a perforated tympanic membrane with purulent drainage tracking from the middle ear into the mastoid region, and CT demonstrates acute mastoiditis. A diagnosis from this group is assigned because the middle ear/mastoid involvement is part of an acute infectious process in a setting of another systemic or related disease. Typical codes: H75.01, H75.03
    • A pediatric patient with a history of recurrent otitis media and eustachian tube dysfunction is evaluated in clinic for persistent conductive hearing loss and chronic ear fullness; exam and imaging show chronic serous otitis media with middle ear inflammation and mastoid scarring as part of an underlying chronic inflammatory condition. A code from this group is used to capture the chronic middle ear and mastoid disorder that occurs in the context of the ongoing disease process. Typical codes: H75.00, H75.02
    • An immunocompromised adult undergoing treatment for a systemic autoimmune disease develops insidious onset ear pain and non-healing otorrhea; specialty ENT assessment identifies a noninfectious inflammatory disorder of the middle ear and mastoid related to the underlying systemic disease, complicating management of the primary condition. A diagnosis from this group documents the middle ear/mastoid disorder as a comorbidity of the primary systemic disease. Typical codes: H75.80, H75.82

    Related Codes

    H65-NONSUPPURATIVE-OTITIS-MEDIA

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

    H66-SUPPURATIVE-AND-UNSPECIFIED-OTITIS-MEDIA

    ICD-10-CM Code For Suppurative And Unspecified 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

    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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