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  2. ICD-10-CM Codes List
  3. H60–H95
  4. H65-H75
  5. Other disorders of middle ear and mastoid in diseases classified elsewhere (H75)

Other disorders of middle ear and mastoid in diseases classified elsewhere (H75)

The ICD-10 code H75 covers various other disorders of the middle ear and mastoid that occur as part of diseases classified elsewhere. This includes mastoiditis and other specified middle ear conditions linked to underlying infectious or parasitic diseases.

Specifically, codes like H75.0 and its subcategories (H75.00 to H75.03) identify mastoiditis related to infections or parasites, detailing which ear is affected; right, left, or both. Mastoiditis itself is a serious inflammation of the mastoid bone behind the ear, associated here with systemic infections. Other codes in this range, such as H75.8 and its subdivisions (H75.80 to H75.83), classify other specified middle ear and mastoid disorders that occur alongside diseases coded elsewhere but do not fall under standard middle ear conditions alone. These codes are essential when documenting ear complications that are secondary to broader infectious or parasitic diseases, helping clinicians and coders accurately report the site and nature of these complications using the ICD-10 code for mastoiditis and related conditions in complex cases.

  • Diseases of the ear and mastoid process (H60–H95)

    • Diseases of middle ear and mastoid (H65-H75)

        • Other disorders of middle ear and mastoid in diseases classified elsewhere (H75)

        • H75 Other disorders of middle ear and mastoid in diseases classified elsewhere
        • H75.0 Mastoiditis in infectious and parasitic diseases classified elsewhere
        • H75.00 Mastoiditis in infectious and parasitic diseases classified elsewhere, unspecified ear
        • H75.01 Mastoiditis in infectious and parasitic diseases classified elsewhere, right ear
        • H75.02 Mastoiditis in infectious and parasitic diseases classified elsewhere, left ear
        • H75.03 Mastoiditis in infectious and parasitic diseases classified elsewhere, bilateral
        • H75.8 Other specified disorders of middle ear and mastoid in diseases classified elsewhere
        • H75.80 Other specified disorders of middle ear and mastoid in diseases classified elsewhere, unspecified ear
        • H75.81 Other specified disorders of right middle ear and mastoid in diseases classified elsewhere
        • H75.82 Other specified disorders of left middle ear and mastoid in diseases classified elsewhere
        • H75.83 Other specified disorders of middle ear and mastoid in diseases classified elsewhere, bilateral

Instructional Notations

Code First

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

  • underlying disease