ICD-10 Code H73.9 – Unspecified disorder of tympanic membrane (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H73.9 – Unspecified disorder of tympanic membrane
What it is
H73.9 identifies a disorder of the tympanic membrane, or eardrum, when the specific condition is not documented. Use it when the record confirms an eardrum abnormality but gives no more detail.
Clinical signs
Clinical features vary; refer to documentation. Findings may include an abnormal eardrum appearance on otoscopy, hearing complaints, ear pain, or a history of ear disease, but the exact disorder is not specified.
When to use this code
Use H73.9 when the clinician documents an unspecified tympanic membrane disorder and does not name a more precise diagnosis. It is appropriate for vague charting such as “TM abnormality” or “eardrum disorder,” when no further detail is available.
Choose a more specific code if the record identifies perforation, retraction, scarring, or another defined tympanic membrane condition. Check documentation before assigning this code.
Do not use for
Do not use H73.9 when the diagnosis is a clearly specified tympanic membrane condition or a middle ear disorder instead. If the note is unclear, check documentation rather than assume the diagnosis.
Coding tip
Query for the exact tympanic membrane diagnosis whenever possible, because H73.9 is a fallback code for unspecified documentation.