Other disorders of middle ear and mastoid in diseases classified elsewhere (H75) ICD-10-CM
The H75 code range covers other disorders of middle ear and mastoid in diseases classified elsewhere with 11 ICD-10-CM diagnosis codes. 8 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
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
Codes in the H75 Range 11 codes · 8 billable
- H75 Other disorders of middle ear and mastoid in diseases classified elsewhereNon-billable
- H75.0 Mastoiditis in infectious and parasitic diseases classified elsewhereNon-billable
- 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 elsewhereNon-billable
- 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
About the H75 Code Range
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.
Questions About This Page
How many billable codes are in the H75 range?
Of the 11 codes in this range, 8 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the H75 range classify?
The range classifies other disorders of middle ear and mastoid in diseases classified elsewhere. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
