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  5. Otosclerosis (H80)

Otosclerosis (H80)

ICD-10 code section H80 covers various types of otosclerosis, a condition affecting the bones of the middle ear which can lead to hearing loss. These codes differentiate otosclerosis by location, type, and laterality to provide precise diagnosis coding.

This section details codes like H80.0 for nonobliterative otosclerosis involving the oval window, with subcodes for the right, left, bilateral, or unspecified ear. In contrast, H80.1 refers to the obliterative type of otosclerosis at the oval window. Another subtype, cochlear otosclerosis coded under H80.2, involves the otic capsule or round window and is linked with synonyms such as “otosclerosis involving round window” or “cochlear otosclerosis.” The section also includes H80.8 for other forms like labyrinthitis ossificans, and H80.9 for unspecified otosclerosis cases, often referred to as “otosclerosis of the middle ear.” These distinctions help medical coders select the correct ICD-10 code for precise documentation of otosclerosis cases based on disease characteristics and ear involvement.

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

    • Diseases of inner ear (H80-H83)

        • Otosclerosis (H80)

        • H80 Otosclerosis
        • H80.0 Otosclerosis involving oval window, nonobliterative
        • H80.00 Otosclerosis involving oval window, nonobliterative, unspecified ear
        • H80.01 Otosclerosis involving oval window, nonobliterative, right ear
        • H80.02 Otosclerosis involving oval window, nonobliterative, left ear
        • H80.03 Otosclerosis involving oval window, nonobliterative, bilateral
        • H80.1 Otosclerosis involving oval window, obliterative
        • H80.10 Otosclerosis involving oval window, obliterative, unspecified ear
        • H80.11 Otosclerosis involving oval window, obliterative, right ear
        • H80.12 Otosclerosis involving oval window, obliterative, left ear
        • H80.13 Otosclerosis involving oval window, obliterative, bilateral
        • H80.2 Cochlear otosclerosis
        • H80.20 Cochlear otosclerosis, unspecified ear
        • H80.21 Cochlear otosclerosis, right ear
        • H80.22 Cochlear otosclerosis, left ear
        • H80.23 Cochlear otosclerosis, bilateral
        • H80.8 Other otosclerosis
        • H80.80 Other otosclerosis, unspecified ear
        • H80.81 Other otosclerosis, right ear
        • H80.82 Other otosclerosis, left ear
        • H80.83 Other otosclerosis, bilateral
        • H80.9 Unspecified otosclerosis
        • H80.90 Unspecified otosclerosis, unspecified ear
        • H80.91 Unspecified otosclerosis, right ear
        • H80.92 Unspecified otosclerosis, left ear
        • H80.93 Unspecified otosclerosis, bilateral

Instructional Notations

Includes

This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

  • Otospongiosis

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Otosclerosis

Formation of spongy bone in the labyrinth capsule which can progress toward the STAPES (stapedial fixation) or anteriorly toward the COCHLEA leading to conductive, sensorineural, or mixed HEARING LOSS. Several genes are associated with familial otosclerosis with varied clinical signs.