Atrophic nonflaccid tympanic membrane, unspecified ear

This code describes a condition where the eardrum (tympanic membrane) is thinned and lacks its normal elasticity, but without the characteristic looseness or floppiness associated with flaccid types. It indicates a degenerative change in the tympanic membrane's structure, often due to chronic inflammation or recurrent otitis media. The "unspecified ear" denotes that the laterality of the condition is not documented.

Use this code when documentation indicates an atrophic tympanic membrane that is specifically noted as "nonflaccid," and the provider does not specify whether it affects the right, left, or both ears. This code is appropriate when the physician's notes describe a thinned, stiffened, or scarred eardrum without mentioning a retraction pocket or adhesive otitis.

• Differentiate from H73.81- (Atrophic flaccid tympanic membrane) which describes a loose or floppy eardrum.
• Avoid using this code if the documentation specifies laterality (e.g., right ear, left ear, bilateral); instead, select the more specific H73.821 or H73.822.
• Ensure the documentation clearly states "nonflaccid" or provides descriptive terms that rule out a flaccid presentation.