ICD-10 Code H73.821 – Atrophic nonflaccid tympanic membrane, right ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H73.821 – Atrophic nonflaccid tympanic membrane, right ear
What it is
This code identifies thinning or atrophy of the right tympanic membrane while it remains nonflaccid. It describes a structural ear drum change, not an infection by itself.
Clinical signs
Clinical features vary; refer to documentation. You may see a thin, retracted, or scarred-appearing right eardrum on otoscopic exam, with the membrane still maintaining some tension.
When to use this code
Use H73.821 when the provider documents atrophic nonflaccid tympanic membrane in the right ear. Code it when the finding is specifically identified during ear examination or follow-up of prior ear disease. If the record only says “abnormal tympanic membrane,” check documentation.
Do not use for
Do not use this code for a flaccid or perforated tympanic membrane, or for left or bilateral ear findings. If the note describes otitis media or another active disorder without this specific membrane finding, choose the documented condition.
Coding tip
Always confirm laterality and the exact membrane description before assigning H73.821.