ICD-10 Code H74.09 – Tympanosclerosis, unspecified ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H74.09 – Tympanosclerosis, unspecified ear
What it is
H74.09 identifies tympanosclerosis affecting the ear, but the documentation does not specify which ear. It refers to scarring or calcified plaques in the tympanic membrane or middle ear.
Clinical signs
Findings may include a white, chalky, or scarred appearance of the tympanic membrane on otoscopic exam. Hearing loss or a history of chronic ear disease may be documented; clinical features vary, refer to documentation.
When to use this code
Use H74.09 when the provider documents tympanosclerosis and does not identify the right or left ear. It is appropriate when the record describes tympanosclerotic changes without a more specific ear laterality. If the note mentions another middle ear disorder, code that condition as documented.
Do not use for
Do not use this code for otosclerosis or nonspecific tympanic membrane scarring without a diagnosis of tympanosclerosis. If the ear side is known, check documentation for a more specific code.
Coding tip
Always verify laterality; unspecified ear codes should be used only when the record does not identify the affected side.